Answer:
f'(x) = [tex]\frac{y - b}{m}[/tex]
Step-by-step explanation:
We are to find the inverse of f(x) = my + b
First, put it in the form x = my + b
Secondly, replace y with x to get;
y = mx + b
Thirdly, solve for x to get;
x = [tex]\frac{y - b}{m}[/tex]
Finally, replace your x with f'(x) to get;
f'(x) = [tex]\frac{y - b}{m}[/tex]