Which function is the inverse of f(x) equals negative 5X -4

Question

asked Jan 4, 2021 92.5k views

2 Answers

Lyda · Answer 1 · 2021-01-05T07:26:17+0000

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^-1(x) = -1/5 x - 4/5