Question

If f(x)=x-3, which of the following is the inverse f(x)?

Answer 1

F^-1=x+3

Explanation:

Answer 2

f^-1 (x) = x+3

Explanation:

To find the inverse, interchange x and y and solve for y

y = x-3

Exchange x and y

x = y-3

Solve for y

Add 3 to each side

x+3 = y-3+3

x+3 =y

The inverse

f^-1 (x) = x+3