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14 September, 15:40

Let f (x) = x2+3x-4.

What is the average rate of change for the quadratic function from x=-3 to x = 8?

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  1. 14 September, 19:39
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    That is the slope from x=-3 to x=8

    so

    just do

    (f (8) - f (-3)) / (8 - (-3)) = (84 - (-4)) / (8+3) = (84+4) / (11) = 88/11=8

    average rate of change is 8
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