Answer: [tex]f^{-1}[/tex] (x) = [tex]\frac{x+8}{9}[/tex]
Step-by-step explanation:
f(x) = 9x - 8 , to find the inverse of f(x) , replace f(x) with y , then the equation becomes
y = 9x - 8 , then make x , the subject of the formula ,
9x = y + 8
x = [tex]\frac{y+8}{9}[/tex]
Finally , replace x , with [tex]f^{-1}[/tex] (x) and y with x , so we have
[tex]f^{-1}[/tex] (x) = [tex]\frac{x+8}{9}[/tex]
