Answer:
[tex]f^{-1}[/tex](x) = [tex]\frac{x}{4\\}[/tex]
Step-by-step explanation:
Let y = f(x) and rearrange making x the subject
y = 4x ( divide both sides by 4 )
x = [tex]\frac{y}{4}[/tex]
Change y back into terms of x
[tex]f^{-1}[/tex] (x) = [tex]\frac{x}{4\\}[/tex]