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28 May, 15:05

Which is the inverse of the function f (x) = 4x-9

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  1. 28 May, 16:01
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    To find the inverse of a function, switch the x and the y (the f (x) = y), then solve for y.

    x = 4y - 9

    x + 9 = 4y

    y = (x+9) / 4

    So f^-1 (x) = (x+9) / 4
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