Answer:
Function
Step-by-step explanation:
Let me give you example
Here we have the function f(x) = 2x+3 and The Inverse Function goes the other way: [tex]f^{-1} (x) = \frac{x-3}{2}[/tex]
So the notation in which we write inverses is: [tex]f^{1} (y)[/tex] hence it is a function while standard notation is the normal way of writing numbers
Hope it will find you well