Answer:
To determine if a graph is a function, we need to check if each input (x-value) has a unique output (y-value). We can do this by performing the vertical line test.
Here's how you can determine if a graph is a function using the vertical line test:
1. Imagine drawing a vertical line anywhere on the graph.
2. If the vertical line intersects the graph at more than one point, then the graph is not a function.
3. However, if the vertical line intersects the graph at only one point, then the graph is a function.
So, if you have a specific graph in mind, you can visualize drawing vertical lines and see if they intersect the graph at more than one point. If they do, then the graph is not a function. If each vertical line intersects the graph at only one point, then the graph is a function.
Explanation: