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4 July, 03:16

Inverse of f (x) = -5x+15

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  1. 4 July, 05:33
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    f (x) = - 5x - 15

    Let y = f (x)

    y = - 5x - 15

    Switch the x and y places, and solve for y:

    x = - 5y - 15

    -5y = x + 15

    y = (x + 15) / -5

    y = - (x/5) - 3

    So the inverse of : f (x) = - 5x - 15 is

    -x/5 - 3
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