What does it mean to find the inverse of a function

In mathematics, an inverse function (or anti-function) is a function that "reverses" another function: if the function f applied to an input x gives a result of y, then applying its inverse function g to y gives the result x, and vice versa, i.e., f(x) = y if and only if g(y) = x. Courtesy to Wikipedia

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

it is not that hard all u have to do is plot the graph

step-by-step explanation: