Question

Which of the following expressions is the inverse of the function y = 3x + 4?

a) y = 3x − 4
b) y = −3x − 4
c) y equals quantity x minus 4 divided by 3
d) y equals quantity x plus 4 divided by 3

Answer 1

 y = (x - 4)/3

So the answer is C ;D

Answer 2

The correct answer is d.
Interchange values of x and y in the equation y= 3x+4
So we get x=3y+4
or x-4=3y
y = (x-4)/3