I forgot how to find a function in a graph

This graph is NOT a function.

Step-by-step explanation:

A graph is a function only if there is exactly one y-value for every x-value. In this case, there are many x-values that have two y-values, making this graph not a function.

Let me know if this helps!

Step-by-step explanation:

-5y= -5

=>y=1

7x+6y=7

7x+6(1)=7

7x=7-6

x=1/7

(1/7, 1) is the solution of the system

(5,1) is not the solution of the system