Question

Which function is the inverse of f(x) = 2x+ 3?

Answer 1

`f(x) = y = 2x +3\\\\\text{Replace x with y and then solve for y:}\\\\~~~~~~~x= 2y+3 \\\\\implies 2y = x-3\\\\\implies y = \frac{x-3}2\\\\\implies f^(-1)(x)= \frac{x-3}2`