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A family is driving home from Georgia. The graph shows the distance away 1 point from home, in miles, as a function of time, in hours. Use the graph to estimate the average rate of change from t=0 to t=7.2. **Round answer to 1 decimal place. ***

User Scribu
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1 Answer

6 votes

Basically we need to find the slope:


\begin{gathered} avg=(f(b)-f(a))/(b-a) \\ \text{Where:} \\ a=0 \\ b=7.2 \\ f(a)=420 \\ f(b)=0 \\ avg=(0-420)/(7.2-0)=(-420)/(7.2)=-(175)/(3)\approx-58.33 \end{gathered}

User Huy Hoang Pham
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