Question

Is the following relation a function?

x y
1 -2
1 -3
2 1
3 -2

A.YES
B.NO

Answer 1

No it is not

Explanation:

You cannot have 2 of the same x values, which in this case it does: there is 2 of 1 so it isn't a function.

Answer 2

No because 1 is repeated which is not possible