Question

If f(x)= -3x+3, then f^-1(x)=

Answer 1

f^-1(x) = 1 -(x/3)

Explanation:

To find the inverse function, solve for y:

x = f(y)

x = -3y +3

x/-3 = y -1 . . . . divide by -3

1 -(x/3) = y . . . . add 1

The inverse function is ...

f^-1(x) = 1 -(x/3)

or

f^-1(x) = (3-x)/3