Question

verify that f(x) and G(x) are inverse functions.

f(x) = -9x + 10, g(x) = -1/9x + 10/9

Answer 1

@PrinceT94 could you help again?

Answer 2

Solve for f(g(x)) and g(f(x)) and if they equal to x, they are inverse functions.

Answer 3

How?

Answer 4

f(g(x)) = -9(-1/9x + 10/9) + 10 = x -10 +10 = x
g(f(x) = -1/9(-9x + 10) + 10/9 = x -10/9 + 10/9 = x

They both result in x, therefore they are inverse functions.
Hope that helped!