Question

Which of the following relations is not a function?

A.
(6, 4), (-3, 2), (3, 1), (-6, 2)

B.
(-6, 4), (3, 3), (-3, 1), (6, 2)

C.
(-3, 4), (3, 2), (6, 1), (-6, 5)

D.
(3, 4), (-3, 2), (3, 1), (-6, 2)

Answer 1

It would be D because you can't have two of the same X factors with different Y outputs
:)