Question

Which relation is a function?
1. (2,4) (-1,7) (3,0) (5,4)
2. (-3,6) (-3,6) (8,6) (8,10)
3. (4,1) ( -2,5) (-8,3) (4.6)

II only
II and III
I only
I and II

Answer 1

I would answer

I and II

Answer 2

l only is a function because the x can not repeat only the y can repeat.