Graph the function and its inverse f(x)=x^2-4

Inverse function:

Step-by-step explanation:

An inverse function is a function such , for all x. In practice, to find the inverse function, we just have to swich "x" by "y" in  the original function, and clear  y, which would be the inverse funtion.In this case, . Then, if we swich x by y, we have the following expression: . Now, we just have to clear  y, as a function of x, by doing the following: Add 2 both sides of the equation. This would yield .Take square root both sides of the equation. This would yield . Then we have the  inverse function! To verify the process, we replace f(x) (our original expression) into the new equation , and check that  equals x:   is