Question

@Mathematics f(2x + 3) = 4x + 9
f(x - 3) = 2x - 3
f(x - 3/2) = x
f(-1) = 1

If f(x) = 2x + 3 and g(x) is the inverse function of f, then according to the information shown, which function represents g(x) ?
A)g(x) = - 1
B)g(x) = x - 3
C)g(x) = 2x + 3
D)g(x) = x - 3/2

Answer 1

f(x) = 2x+3
x = 2y + 3
y = (x-3)/2
Answer should be D

Answer 2

D