Answer:
f^-1(x) = -1/5 x - 4/5
Explanation:
f(x) = -5x - 4
Replace f(x) with y.
y = -5x - 4
Switch x and y.
x = -5y - 4
Solve for y.
5y = -x - 4
y = -1/5 x - 4/5
Replace y with f^-1(x).
f inverse x = -x+4/5
8.2m questions
10.9m answers