I need help, I will Mark u as the brainiest answer!?

Answer:
c
Step-by-step explanation:
it's not a function bc the x values have more than one y value between 1-3
Answer:
“The X-values between 1 and 3 are paired with multiple y-values”
Step-by-step explanation:
If a graph has an x value, it can only have one y value or it is not a function. (must be a straight line to be a function).