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15 November, 04:04

If f (x) = 15x+3, then f-1 (x) =

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  1. 15 November, 05:27
    0
    y=x-3/15

    Step-by-step explanation:

    f (x) = 15x+3/y=15x+3

    f-1 (x) is an inverse function, which means you gotta swap the x an the y:

    x=15y+3

    The goal is to get y alone, so you minus 3 on both sides to get

    x-3=15y

    And then divide both sides by 15 to get y alone

    x-3/15=y
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