Question

What is the inverse of f(x) = 4x + 2?

o h(x) = {x+2
* }(x) = x-2
o h(x) = 3x - 2
o h(x) = 3x - 6

Answer 1

The inverse is (x-2)/4

Explanation:

f(x) = 4x+2

y =4x+2

Exchange x and y

x = 4y+2

Solve for y

Subtract 2 from each side

x-2 = 4y+2-2

x-2 = 4y

Divide each side by 2

(x-2)/4 =4y/4

(x-2)/4 =y

The inverse is (x-2)/4