Gives a formula for a function y = (x). In each case, find -1 (x) and

Gives a formula for a function y = ƒ(x). In each case, find ƒ ^-1(x) and identify the domain and range of ƒ ^-1. As a check, show that ƒ(ƒ ^-1(x)) = ƒ ^-1(ƒ(x)) = x.

ƒ(x) = (1/2)x - 7/2