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Interpret the graph of a linear model

DIFFICULTYintrostandardchallengeexam
QUESTION TYPEMix of allChange
Read the starting valueRead an outputCalculate the contextual rateRecognise the model equationNOWMix of allRecommended
Question 1 of 8

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The graph models the total charge for a mobile mechanic's visit. \(h\) is measured in hours, and \(C\) is measured in $

The model's domain is \(0 \le h \le 7\). The graph uses unit gridlines in the stated axis units

Cartesian graph with horizontal axis Use time (hours) and vertical axis Total charge ($). The window is x from -1 to 13 and y from 57 to 73, with unit gridlines in the displayed axis units. The model segment covers the stated domain from (0, 59) to (7, 66). Marked points: P is (2, 61), Q is (4, 63), R is (6, 65).0246810125860626466687072PQRmodelUse time (hours)Total charge ($)
1 mark

Find the total charge when h = 0