Question

Simple Algebra

f(x)= 3/4x + 12
g(x)= 4/3x - 12

Are f and g inverse functions?

Answer 1

No.

Explanation:

f(x) = 3/4x + 12

g(x) = 4/3x - 12

f[g(x)] = 3/4(4/3x - 12) + 12

y = x - 3

x - 3

g[f(x)] = 4/3(3/4x + 12) -12

y = x - 4

x - 4