Use the vertical line test to determine whether or not the graph is a graph of a function.
![Use the vertical line test to determine whether or not the graph is a graph of a function class=](https://us-static.z-dn.net/files/d75/2f17ca573ca745db61f13e387612131c.png)
Answer:
25. Not a function because when you use vertical line test, you came across two points at the same time.
26. This is a function because when you vertical line test, you don't come across two points at the same time.
Step-by-step explanation: