9. three pairs of functions are given below. for which pairs are f and g inverses of each other? show work to support
your reasoning. if a domain is not specified, assume it is the set of real numbers.
a. f(x) = x / x + 1, x ≠ −1 and g(x) = −x / x − 1 , x ≠ 1
b. f(x) = √x − 1, x ≥ 0 and g(x) = (x + 1)2
c. f(x) = −0.75x + 1 and g(x) = − 4 / 3 x − 4 / 3

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64

cheater

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

14

step-by-step explanation: