Question

Which relation is a function?

A.
(–8, –3), (–1, –5), (–8, –2)

B.
(1, –3), (5, –3), (–3, 7)

C.
(–3, 0), (5, 9), (–3, 2)

D.
(1, 2), (1, 1), (0, 1)

Answer 1

the answer is B, a function will only have 1 y-value for every x-value, if you look closely you would notice that all the other options have atleast 2-y-values for an x-value

ex. in C for the x- value -3 you would notice that there are 2 y-values y=0 and y=2, instead of just one thus its not a function

Answer 2

that's really confusing.. but thanks!! @emily_96