For a function p(x)= x^2-9, what is the inverse function for the domain [0, infinity\

An inverse function is a function that reverses another function, so we have a function called:



Then, the inverse function will be as follows:



Given that , we need to isolate x in terms of y:


∴ 

So:

and

therefore, exchanging variables x and y:

and
and

Which are the figures shown below.

It should be c i think.