The inverse function f(x) = 3x + 4 is
A
(x-4)/3
B
(x-5)/5
C
(x+3)/4
D
(x+4)/3
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Let y = f(x).
\(y = 3x + 4 \implies x = \frac{y - 4}{3}\)
Replace y with x.
\(y = \frac{x - 4}{3} \)
Source: Myschool Past Questions Archive (Record #3360)