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  1. Chapter 15 Class 8 Introduction to Graphs
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Ex 15.1, 7 - Chapter 15 Class 8 Introduction to Graphs - NCERT Can there be a time temperature graph as follows? (i) As time increases, the temperature increases. So, it is a valid time temperature graph (ii) As time increases, the temperature decreases. So, it is a valid time temperature graph. (iii) Graph shows different temperature at the same time, Which is not possible ∴ It is not a valid time temperature graph. (iv) As time increases, temperature remains constant. This is possible So, it is a valid time temperature graph.

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.