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What is the average of change. Please write you answer as an integer or simplifies fraction

What is the average of change. Please write you answer as an integer or simplifies-example-1
User Ahmadalibaloch
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1 Answer

17 votes
17 votes

Given:f(x)=-4x+3

Find: average rate of change of f(x) fom 1 to 9

Explanation:


\begin{gathered} f(x)=-4x+3 \\ average\text{ }rate\text{ of change=}(f(x_2)-f(x_1))/(x_2-x_1) \\ f(x_2)=f(9)=-4*9+3 \\ =-36+3=-33 \\ f(x_1)=f(1)=-4*1+3 \\ =-1 \\ average\text{ }rate\text{ of change=}(-33-(-1))/(9-1) \\ =(-32)/(8) \\ =-4 \end{gathered}

User Bobbel
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