Solve G(x)=5x

Question

im learning how to do inverse functions but i need to know in the quickest way as possible

Answer 1

G(x) = 5x , for simplicity, replace G(x) with y, y = 5x

 

replace every x with y and every y with x, x = 5y 

 

Solve for y, divide both sides of the equation by 5, x/5 = (5y/5), x/5 = y, rearrange terms y = x/5 

 

 Replace y with G^-1(x), then G^-1(x)= x/5 is the inverse function of G(x)=5x