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36 votes
36 votes
Find the average rate of change y=11x^2 + 10 where x goes from -2 to 7

User Esote
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1 Answer

8 votes
8 votes

\begin{gathered} \text{average rate of change = }\frac{f(x_2)-f(x_1)}{x_2-x_1_{}} \\ f(x_2)=f(7)=11(49)+10=549 \\ f(x_1)=f(-2)=11(4)+10=54 \\ \text{average rate of change=}(549-54)/(7-(-2)) \\ \text{average rate of change=}(495)/(9) \\ \text{average rate of change=}55 \end{gathered}

User KevBot
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