The inverse of a function is what reverses it. That is, if a function outputs y for an input x, then its inverse will output x for an input y.
To find the inverse of a function, we interchange x and y in the equation.
Here, we have
![(x-4)^2- (2)/(3) = 6y-12](https://img.qammunity.org/2019/formulas/mathematics/high-school/y9h8ksnfa28eqvp4pn1ac5i64t7t6kjppa.png)
.
We first interchange x and y.
![(y-4)^2- (2)/(3) = 6x-12](https://img.qammunity.org/2019/formulas/mathematics/high-school/m5c57h45drvpjdrl3mzwn7hofc4a25q4c9.png)
This form is technically an inverse already, but by convention and for the answer choices, we will now solve for y.
![(y-4)^2= 6x-12+(2)/(3) \\ \\ (y-4)^2 = 6x- (34)/(3) \\ \\ y-4= \sqrt{6x-(34)/(3)} \\ \\ y = 4\pm\sqrt{6x-(34)/(3)}](https://img.qammunity.org/2019/formulas/mathematics/high-school/r7ctlroyi1mxp9fh90n9y4ssl4rc2i2094.png)