Question

Find the inverse of the function f(x) = 2x – 4.

Answer 1

The correct answer for this is D) g(x) = 1/2x + 2

Because f(x) is one to one,  its inverse is a function.

Answer 2

Replace f(x)fx with yy.y=2x−4y=2x-4Interchange the variables.x=2y−4x=2y-4Solve for yy.Tap for more steps...y=2+x2y=2+x2Solve for yy and replace with f−1(x)f-1x.