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8 May, 07:41

Given: f (x) 9x+5, find f^-1 (x) then state whether f^-1 (x) is a function.

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  1. 8 May, 11:33
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    F (x) = 9x + 5

    y = 9x + 5

    9x = y - 5

    x = (y - 5) / 9

    f^-1 (x) = (x - 5) / 9

    f^-1 (x) is a function.
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