Question 1031181
Hi there,
f(x) = 5x - 9
g(x) = 1/5(x + 9)
(f o g)(x) = 5(1/5(x + 9) - 9)
(f o g)(x) = (x + 9)- 9
(f o g)(x) = x + 9 - 9
(f o g)(x) = x
.........
(g o f)(x) = 1/5(5x - 9 + 9)
g o f)(x) = 1/5(5x)
(g o f)(x) = x
.........
The reason for the answer of 'x'
in both cases is f(x) is the inverse
of g(x) and g(x) is the inverse of f(x)
Hope this helps :-)