{"id":3418,"date":"2022-12-16T04:31:37","date_gmt":"2022-12-16T04:31:37","guid":{"rendered":"https:\/\/theexampillar.com\/ncert\/?p=3418"},"modified":"2023-01-31T06:50:06","modified_gmt":"2023-01-31T06:50:06","slug":"ncert-solutions-class-8-maths-chapter-15-introduction-to-graphs-ex-15-1","status":"publish","type":"post","link":"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-maths-chapter-15-introduction-to-graphs-ex-15-1\/","title":{"rendered":"NCERT Solutions Class 8 Maths Chapter 15 Introduction to Graphs Ex 15.1"},"content":{"rendered":"<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">NCERT Solutions Class 8 Mathematics\u00a0<\/span><br \/>\n<span style=\"color: #000000; font-family: georgia, palatino, serif;\">Chapter &#8211; 15 (Introduction to Graphs)\u00a0<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">The NCERT Solutions in English Language for Class 8 Mathematics <strong>Chapter &#8211; 15 Introduction to Graphs <\/strong>Exercise 15.1 has been provided here to help the students in solving the questions from this exercise.\u00a0<\/span><\/p>\n<h4><span style=\"color: #000000;\"><strong>Chapter 15: Introduction to Graphs<\/strong><\/span><\/h4>\n<ul>\n<li><a href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-maths-chapter-15-introduction-to-graphs-ex-15-2\" target=\"_blank\" rel=\"noopener\">NCERT Solution Class 8 Maths Ex &#8211; 15.2<\/a><\/li>\n<li><a href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-maths-chapter-15-introduction-to-graphs-ex-15-3\" target=\"_blank\" rel=\"noopener\">NCERT Solution Class 8 Maths Ex &#8211; 15.3<\/a><\/li>\n<\/ul>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">Exercise &#8211; 15.1<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. The following graph shows the temperature of a patient in a hospital, recorded every hour.<br \/>\n<\/strong><strong>(a)<\/strong> What was the patient\u2019s temperature at 1 p.m.?<br \/>\n<strong>(b)<\/strong> When was the patient\u2019s temperature 38.5\u00b0 C?<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3470\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-1.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"471\" height=\"432\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-1.png 471w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-1-300x275.png 300w\" sizes=\"auto, (max-width: 471px) 100vw, 471px\" \/><br \/>\n<strong>(c)<\/strong> The patient\u2019s temperature was the same two times during the period given. What were these two times?<br \/>\n<strong>(d)<\/strong> What was the temperature at 1.30p.m.? How did you arrive at your answer?<br \/>\n<strong>(e)<\/strong> During which periods did the patients\u2019 temperature show an upward trend?<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Solution &#8211;<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(a)<\/strong> At 1 pm, the patient\u2019s temperature was 36.5\u00b0C.<br \/>\n<strong>(b)<\/strong> The patient\u2019s temperature was 38.5\u00b0C at 12 noon.<br \/>\n<strong>(c)<\/strong> The patient\u2019s temperature was same at 1 p.m. and 2p.m<br \/>\n<strong>(d)<\/strong> The graph between the times 1 pm and 2 pm is parallel to the x-axis. The temperature at 1 pm and 2 pm is 36.5\u00b0C. So, the temperature at 1:30 pm is 36.5\u00b0C.<br \/>\n<strong>(e)<\/strong> The patient\u2019s temperature showed an upward trend from 9a.m.to 11a.m. and from 2 p.m. to 3 p.m.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. The following line graph shows the yearly sales figures for a manufacturing company.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3471\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-2.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"405\" height=\"349\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-2.png 405w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-2-300x259.png 300w\" sizes=\"auto, (max-width: 405px) 100vw, 405px\" \/><br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(a)<\/strong> What were the sales in (i) 2002 (ii) 2006?<br \/>\n<strong>(b)<\/strong> What were the sales in (i) 2003 (ii) 2005?<br \/>\n<strong>(c)<\/strong> Compute the difference between the sales in 2002and 2006.<br \/>\n<strong>(d)<\/strong> In which year was there the greatest difference between the sales as compared to its previous year?<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Solution &#8211;<br \/>\n<\/strong><strong>(a) The sales in:<br \/>\n<\/strong><strong>(i)<\/strong> 2002 was Rs. 4 crores.<br \/>\n<strong>(ii)<\/strong> 2006 was Rs. 8 crores.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) The sales in:<br \/>\n<\/strong><strong>(i)<\/strong> 2003 was Rs. 7 crores.<br \/>\n<strong>(ii)<\/strong> 2005 was Rs. 10 crores.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(c)<\/strong> The difference of sales in 2002 and 2006 = Rs.8 crores \u2013 Rs.4 crores = Rs.4 crores<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(d)<\/strong> In the year 2005, there was the greatest difference between the sales and compared to its previous year, which is (Rs. 10 crores \u2013 Rs. 6 crores) = Rs. 4 crores.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3. For an experiment in Botany, two different plants, plant A and plant B were grown under similar laboratory conditions. Their heights were measured at the end of each week for 3 weeks. The results are shown by the following graph.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3467\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-3.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"586\" height=\"381\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-3.png 586w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-3-300x195.png 300w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-3-480x312.png 480w\" sizes=\"auto, (max-width: 586px) 100vw, 586px\" \/><br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(a)<\/strong> How high was Plant A after (i) 2 weeks (ii) 3weeks?<br \/>\n<strong>(b)<\/strong> How high was Plant B after (i) 2 weeks (ii) 3 weeks?<br \/>\n<strong>(c)<\/strong> How much did Plant A grow during the 3<sup>rd<\/sup>\u00a0week?<br \/>\n<strong>(d)<\/strong> How much did Plant B grow from the end of the 2nd week to the end of the 3<sup>rd\u00a0<\/sup>week?<br \/>\n<strong>(e)<\/strong> During which week did Plant A grow most?<br \/>\n<strong>(f)<\/strong> During which week did Plant B grow least?<br \/>\n<strong>(g)<\/strong> Were the two plants of the same height during any week shown here? Specify.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Solution &#8211;<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(a)<br \/>\n<\/strong><strong>(i)<\/strong> The plant A was 7 cm high after 2 weeks<br \/>\n<strong>(ii)<\/strong> After 3 weeks it was 9 cm high<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b)<br \/>\n<\/strong><strong>(i)<\/strong> Plant B was also 7 cm high after 2 weeks<br \/>\n<strong>(ii)<\/strong> After 3 weeks it was 10 cm high<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(c)<\/strong> Plant A grew = 9 cm \u2013 7 cm = 2cm during 3<sup>rd<\/sup>\u00a0week.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(d)<\/strong> Plant B grew during end of the 2<sup>nd<\/sup>\u00a0week to the end of the 3<sup>rd<\/sup>week = 10 cm \u2013 7 cm = 3 cm<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(e) <\/strong>Growth of plant A during 1<sup>st\u00a0<\/sup>week = 2 cm &#8211; 0 cm = 2 cm<\/span><br \/>\n<span style=\"color: #000000;\">Growth of plant A during 2<sup>nd<\/sup>\u00a0week = 7 cm &#8211; 2 cm = 5 cm<\/span><br \/>\n<span style=\"color: #000000;\">Growth of plant A during 3<sup>rd<\/sup>\u00a0week = 9 cm &#8211; 7 cm = 2 cm<\/span><br \/>\n<span style=\"color: #000000;\">Therefore, plant A grew the most, i.e. 5 cm, during the 2<sup>nd<\/sup>\u00a0week.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(f) <\/strong>Growth of plant B during 1<sup>st<\/sup>\u00a0week = 1 cm &#8211; 0 cm = 1 cm<\/span><br \/>\n<span style=\"color: #000000;\">Growth of plant B during 2<sup>nd\u00a0<\/sup>week = 7 cm &#8211; 1 cm = 6 cm<\/span><br \/>\n<span style=\"color: #000000;\">Growth of plant B during 3<sup>rd<\/sup>\u00a0week = 10 cm &#8211; 7 cm = 3 cm<\/span><br \/>\n<span style=\"color: #000000;\">Therefore, plant B grew the least, i.e. 1cm, during the 1st week.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(g)<\/strong> Yes. At the end of the 2<sup>nd\u00a0<\/sup>week, the heights of both plants were the same i.e. 7 cm.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4.<\/strong>\u00a0<strong>The following graph shows the temperature forecast and the actual temperature for each day of a week.<br \/>\n<\/strong><strong>(a)<\/strong> On which days was the forecast temperature the same as the actual temperature?<br \/>\n<strong>(b)<\/strong> What was the maximum forecast temperature during the week?<br \/>\n<strong>(c)<\/strong> What was the minimum actual temperature during the week?<br \/>\n<strong>(d)<\/strong> On which day did the actual temperature differ the most from the forecast temperature?<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3468\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-4.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"650\" height=\"397\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-4.png 650w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-4-300x183.png 300w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-4-480x293.png 480w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Solution &#8211;<br \/>\n<\/strong><strong>(a)<\/strong> On Tuesday, Friday and Sunday, the forecast temperature was same as the actual temperature.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b)<\/strong> The maximum forecast temperature was 35<sup>o<\/sup>C.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(c)<\/strong> The minimum actual temperature was 15<sup>o<\/sup>C.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(d)<\/strong> The actual temperature differed the most from the forecast temperature on Thursday.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>5. Use the tables below to draw linear graphs<br \/>\n<\/strong><strong>(a)<\/strong> The number of days a hill side city received snow in different years.<br \/>\n<strong><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3469\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-5a.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"391\" height=\"83\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-5a.png 391w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-5a-300x64.png 300w\" sizes=\"auto, (max-width: 391px) 100vw, 391px\" \/> <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b)\u00a0<\/strong>Population (in thousands) of men and women in a village in different years.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3465\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-5b.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"600\" height=\"127\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-5b.png 600w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-5b-300x64.png 300w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-5b-480x102.png 480w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Solution &#8211;<br \/>\n<\/strong><strong>(a)<\/strong> Consider \u201cYears\u201d along x-axis and \u201cDays\u201d along y-axis. Using given information, linear graph will look like:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3473\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5a.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"371\" height=\"333\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5a.png 591w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5a-300x269.png 300w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5a-480x430.png 480w\" sizes=\"auto, (max-width: 371px) 100vw, 371px\" \/><br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b)<\/strong> Consider \u201cYears\u201d along x-axis and \u201cNo. of Men and No. of Women\u201d along y-axis (2 graphs). Using given information, linear graph will look like:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3474\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5b.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"407\" height=\"361\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5b.png 576w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5b-300x266.png 300w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Ans-5b-480x426.png 480w\" sizes=\"auto, (max-width: 407px) 100vw, 407px\" \/><br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>6.<\/strong>\u00a0<strong>A courier-person cycles from a town to a neighboring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graph.<br \/>\n<\/strong><strong>(a)<\/strong> What is the scale taken for the time axis?<br \/>\n<strong>(b)<\/strong> How much time did the person take for the travel?<br \/>\n<strong>(c)<\/strong> How far is the place of the merchant from the town?<br \/>\n<strong>(d)<\/strong> Did the person stop on his way? Explain.<br \/>\n<strong>(e)<\/strong> During which period did he ride fastest?<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3466\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-6.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"445\" height=\"323\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-6.png 445w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-6-300x218.png 300w\" sizes=\"auto, (max-width: 445px) 100vw, 445px\" \/><br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Solution &#8211;<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(a)<\/strong> Scale taken for the time axis i.e. x-axis is 4 units = 1 hour<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) <\/strong>The person travelled during the time 8 a.m. &#8211; 11:30 a.m. Therefore, the person took <img decoding=\"async\" src=\"https:\/\/latex.codecogs.com\/gif.latex?3\\frac{1}{2}\" alt=\"3\\frac{1}{2}\" align=\"absmiddle\" \/> hours to travel.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(c)<\/strong> It was 22 km far from the town.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(d)<\/strong> Yes, this has been indicated by the horizontal part of the graph. He stayed from 10 a.m. to 10.30 a.m.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(e)<\/strong> He rides the fastest between 8 a.m. and 9a.m.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>7. Can there be a time-temperature graph as follows? Justify your answer.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3464\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-7.png\" alt=\"NCERT Maths Solutions Class 8\" width=\"572\" height=\"518\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-7.png 572w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-7-300x272.png 300w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/12\/NCERT-Solutions-Class-8-Maths-Ex-15.1-Q-7-480x435.png 480w\" sizes=\"auto, (max-width: 572px) 100vw, 572px\" \/><br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Solution &#8211;<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(i)<\/strong> This can be a time-temperature graph, as the temperature can increase with the increase in time.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(ii)<\/strong> This can be a time-temperature graph, as the temperature can decrease with the decrease in time.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(iii)<\/strong> This cannot be a time-temperature graph since different temperatures at the same time are not possible<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(iv)<\/strong> It is a time-temperature graph. It is showing constant temperature.<\/span><\/p>\n<p>&nbsp;<\/p>\n<table style=\"width: 100%; border-collapse: collapse;\" border=\"1\">\n<tbody>\n<tr style=\"height: 32px;\">\n<td style=\"width: 100%; background-color: #f2e079; text-align: center; height: 32px;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong>NCERT Class 8<sup>th\u00a0<\/sup>Solution\u00a0<\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-english\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 English\u201d (Edit)\">NCERT Solutions Class 8 English<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-hindi\/\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 8 Hindi<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-maths\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 8 Mathematics<\/a>\u00a0<\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><a href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-sanskrit-ruchira\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\">NCERT Solutions Class 8 Sanskrit<\/span><\/strong><\/span><\/a><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 8 Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 28px;\">\n<td style=\"width: 100%; text-align: left; height: 28px;\"><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-8-social-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 8 Social Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions Class 8 Mathematics\u00a0 Chapter &#8211; 15 (Introduction to Graphs)\u00a0 The NCERT Solutions in English Language for Class 8 Mathematics Chapter &#8211; 15 Introduction to Graphs Exercise 15.1 has been provided here to help the students in solving the questions from this exercise.\u00a0 Chapter 15: Introduction to Graphs NCERT Solution Class 8 Maths Ex [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[442],"tags":[472,473,445,5],"class_list":["post-3418","post","type-post","status-publish","format-standard","hentry","category-class-8-maths","tag-ncert-class-8-maths-chapter-15-introduction-to-graphs-in-english","tag-ncert-solutions-class-8-maths-chapter-15-in-english","tag-ncert-solutions-class-8-maths-in-english","tag-ncert-solutions-in-english"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.9 (Yoast SEO v27.3) - 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