Answer:
Step-by-step explanation:
so to go forward we input x and get out y, to go backwards ( the inverse) we plug in y and get out x , so just solve the equation for x
f(x) = 8x - 5
remember that f(x) = y
so,
y = 8x - 5
now solve for x
y+5 = 8x
(y+5) / 8 = x
then remember that we want to swap x and y ,
(x+5) / 8 = y
now y = [tex]f^{-1}[/tex](x), it's kinda confusing.
[tex]f^{-1}[/tex](x)= [tex]\frac{x+5}{8}[/tex]
