Question

12. (01.02)
Which function below is the inverse of f(x) = x² - 9?

Answer 1

FOR EQUATION INVERSES IT MEANS ... x and y swap positions.

`x = (f(x))^(2) - 9 \\ (f(x))^(2) = x + 9 \\ \sqrt{(f(x))^(2) } = √(x + 9) \\ f(x) = √(x + 9)`

ATTACHED IS THE SOLUTION.