PLEASE HELP ME I WILL MARK BRAINLIEST IF YOUR RIGHT..

Answer:
C
Step-by-step explanation:
a function means each x value will have only one outcome
example, (8,5) (9,5) is ok but (8,6) (8,10) isnt
Answer: The correct answer is "C" because (x, y) represent a function of ordered pairs like {(-1, 1), (0, 0), (1, 1), (2, 2)}. :)
Step-by-step explanation: