Exam Style Question on Graphs
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 367. This question is similar to one that appeared in a GCSE Higher paper in 2017. The use of a calculator is allowed.
The graph shows the temperature (\(T\)) of an unidentified flying object over a period of 10 seconds (\(t\)).
Use the graph to work out an estimate of the rate of decrease of temperature at 7 seconds. You must show your working.
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If you need more practice try the self-checking interactive exercises called Gradient of a Line.
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