Which equation is the inverse of y= 9x-4?

Question

Which equation is the inverse of y= 9x-4?

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    0
    2021-09-14T21:31:42+00:00

    We need to determine the equation solving for x, because x is the inverse of y. The inverse of the function is written as y⁻¹

    y = 9x – 4
    switch the side, so x will be on the left side
    9x – 4 = y

    move 4 to the right side, substraction becomes addition
    9x = y + 4

    move 9 to the right side, multiplication becomes division
    x =  \cfrac{y+4}{9}

    Switch x with invers of y, switch y with x. The invers is as written below.
    y⁻¹ =  \cfrac{x+4}{9}

    0
    2021-09-14T21:32:39+00:00

    9×4=36 and then you put the negative in and get -36

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