Question

What is the inverse of the function below? f(x) = x – 4

A. f –1(x) = x – 4

B. f –1(x) = –x – 4

C. f –1(x) = –x + 4

D. f –1(x) = x + 4

Answer 1

d

Explanation:

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Answer 2

`f^(-1) = x+4`

Explanation:

f(x) = x- 4

To find inverse function , we replace f(x) b y

y = x- 4

Replace y with x and replace x with y

x = y - 4

Now we solve for y

x = y - 4

Add 4 on both sides

x + 4 = y

Now we replace y with f^-1(x)

`f^(-1) = x+4`

Inverse of function f(x) = x-4 is f^-1(x) = x+ 4