Question

which relation is a function?
a. (5,-2),(4,6),(-3,-2),(0,4)
b. (-1,-2),(3,-5),(-1,-5)(2,-2)
c. (4,3),(3,2),(-1,5),(4,0)
d. (-4,-4),(3,-3)(-4,4),(-3,3)

Answer 1

A

Answer 2

A is a function because each x value is mapped to only one y value. The other relations each have an instance of a single x value being mapped to multiple y values.

Answer 3

CAn't have two same x values

Answer 4

Has to be a. (5,-2),(4,6),(-3,-2),(0,4)
Because
each of the other options have the same x going to different y values.