The graph in the image shows a curve that fails the vertical line test, which determines whether a graph represents a function.

To apply the vertical line test:

• A graph represents a function if any vertical line drawn through the graph intersects it at most once.
• In this case, if you draw a vertical line at certain points (such as near the center), it intersects the graph more than once, which means this is not a function.

The correct answer is: Not a Function.

Would you like a more detailed explanation or have further questions?

Here are some related questions to deepen your understanding:

1. What is the vertical line test, and why is it important?
2. Can a function have two outputs for the same input?
3. How can you graphically identify functions?
4. What is an example of a graph that passes the vertical line test?
5. How do we define a function in algebraic terms?

Tip: Always use the vertical line test when determining whether a curve is a function!