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

Question

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## Answers ( No )

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 =

Switch x with invers of y, switch y with x. The invers is as written below.

y⁻¹ =

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