Question

If f(x) = √3x+2, what is the equation for f^-1(x)

Answer 1

The correct answer is D) f(x) = (x^2 - 2)/3

Explanation:

To find an inverse function, swap x and f(x) and then solve for the new f(x). That will be the new inverse function.

f(x) = √3x+2

x = √3f(x)+2

x - 2 = √3f(x)

x^2 - 2 = 3f(x)

(x^2 - 2)/3 = f(x)