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18 July, 16:25

What is the average rate of change of f (x) = 7-8x; x=-2, x=4?

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  1. 18 July, 16:37
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    F (x) = 7-8x

    f (-2) = 7-8 * (-2)

    =7 - (-16)

    =7+16

    =23

    f (4) = 7-8*4

    =7-32

    =-25

    average=[23 + (-25) ]:2

    = (23-25) : 2

    = (-2) : 2

    =-1
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