Question

What is the inverse of the function f(x) = x +3?

A. h(x) =1/3 x + 3
B. h(x) = 1/3x – 3
C. h(x) = x – 3
D. h(x) = x + 3

Answer 1

f(x) = x + 3
y = x + 3
x = y - 3

Inverse is h(x) = x - 3

Answer 2

Option C is correct that is h(x)=x-3

Explanation:

We have been given a function:

`f(x)=x=3`

`\text{let y}=f(x)`

`y=x+3`

`x=y-3`

Hence,
`f^(-1)y=y-3`

Therefore,
`f^(-1)x=x-3`

Hence, Option C is correct that is h(x)=x-3