HELP PLZ I NEED IT ASAP!!
Which relation is a function?

A.
{(1, 2); (2, 5); (3, 2); (4, 5)}

B.
{(1, 2); (1, 3); (3, 2); (4, 2)}

C.
{(1, 2); (2, 3); (3, 4); (1, 5)}

D.
{(1, 2); (2, 3); (3, 4); (2, 5)}

Question

HELP PLZ I NEED IT ASAP!! 
Which relation is a function?

A.
	{(1, 2); (2, 5); (3, 2); (4, 5)}

B.
	{(1, 2); (1, 3); (3, 2); (4, 2)}

C.
	{(1, 2); (2, 3); (3, 4); (1, 5)}

D.
	{(1, 2); (2, 3); (3, 4); (2, 5)}

texaschic101 · Answer

it is a function if no 2 x values are the same. The y values can be repeated...just not the x ones. So can you tell me which ones have no 2 x values the same ?

anonymous · Answer

@texaschic101 So it would be A?

texaschic101 · Answer

yes..it is A

anonymous · Answer

Thank you so much! @texaschic101

texaschic101 · Answer

anytime :)