### Home > INT3 > Chapter 6 > Lesson 6.3.1 > Problem 6-84

6-84.

What is the equation for the inverse of the function *f*(*x*) =

Change *f*(*x*) to *y*. Then interchange the *x* and *y*.

Subtract 1 from each side, and then square each side to get rid of the square root.

Cancel the 4 in the numerator and denominator, then add 3 to each side of the equation.

Are there any domain restrictions?