Question

Is the relation a function?
Select Yes or No for each relation

(3, 3) (3, -2) (-2, 4) and (1, -6)
(3, 3) (5, -2) (-2, 4) and (1, -2)
(3, 3) (5, -2) (-2, 4) and (5, 9)
(3, 3) (5, -2) (-2, 4) and (4, 9)

Answer 1

The answers in order:
No
Yes
No
Yes

Answer 2

ANSWER

NO
YES
NO
YES



EXPLANATION

For the relation to be a function, there should not two or more points that have the same x coordinates.


$(3, 3) (3, -2) (-2, 4) \: and \: (1, -6)$


NO

This relation is not a function, because the first two points have the same x-coordinate which is 3.


$(3, 3) (5, -2) (-2, 4) \: and \: (1, -2)$


YES

This relation is a function because no two points have the same x-coordinates.



$(3, 3),(5, -2),(-2, 4) \: and \: (5, 9)$


NO

This relation is not a function, because the first two points (5,-2) and (5,9) have the same x-coordinate which is 5.

$(3, 3) (5, -2) (-2, 4) \: and \: (4, 9)$

YES

This relation is a function because no two points have the same x-coordinates.