Determine whether the graph is the graph of a function.

Answer:
No
Step-by-step explanation:
In math, you could only say a graphic represents an equation if the lines cross each point only obe time.
In this case, it is not.
You can appreciate that many of the points are double, like -5 or -10. You can demonstrate by drawing a vertical line that starts on one side of the graphic to the other and sees that it touch it twice.