Question

Determine if the following function has an inverse function.

k(x)=3x^2−5

A. k has an inverse function

B. k does NOT have an inverse function

Answer 1

horizontal line test - to test if the inverse is a function:

graph your function. if you can draw *any* horizontal line that crosses the function multiple times, then the inverse is not a function. otherwise, it has an inverse function.

see which applies to your function.