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16 August, 15:01

What is the inverse of the function f (x) = 4x + 8?

h (x) = x - 2

h (x) = x + 2

h (x) = x - 2

h (x) = x + 2

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Answers (1)
  1. 16 August, 16:06
    0
    Replace f (x) with y

    swtich x and y

    solve for y

    replace y with f⁻¹ (x)

    f (x) = 4x+8

    y=4x+8

    x=4y+8

    x-8=4y

    1/4x-2=y

    y=1/4x-2

    f⁻¹ (x) = 1/4x-2

    none of the above
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