Question: What is the relationship between a function and its inverse?

Options:

1. They are always identical.
2. The inverse function undoes the action of the original function.
3. They can never intersect on a graph.
4. The inverse function is always a polynomial.

Correct Answer: The inverse function undoes the action of the original function.

Solution:

The inverse function undoes the action of the original function, meaning that applying a function and then its inverse returns the original input.