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25 March, 01:08

F (*) = -3x+7, what is the value of f (1) f (-8)

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  1. 25 March, 03:16
    0
    Use the substitution method

    f (x) = - 3x+7

    f (1) = - 3 (1) + 7

    = - 3+7

    = - 4

    f (-8) = - 3 (8) + 7

    = - 24+7

    = - 17

    Answers:

    f (1) = - 4, f (-8) = - 17
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