Which relation is a function?

A.

(–25, 16), (0, 16), (–25, 18)

B.
(19, 11), (34, 12), (34, 10)

C.
(35, 31), (24, 15), (12, 0)

D.
(34, 30), (18, 17), (34, 15)

Question

Which relation is a function? 	
	
 
A.
	

(–25, 16), (0, 16), (–25, 18)
	
 
B.
	(19, 11), (34, 12), (34, 10)
	
 
C.
	(35, 31), (24, 15), (12, 0)
	
 
D.
	(34, 30), (18, 17), (34, 15)

anonymous · Answer

the one where there is no repeat in the first coordinate
for example A is not right (–25, 16), (0, 16), (–25, 18)
because there are two $-25$ in the first slot

anonymous · Answer

I think it's B but im pretty sure i might be wrong

anonymous · Answer

is there a repeat in the first coordinate here?	
(19, 11), (34, 12), (34, 10)

anonymous · Answer

yes

anonymous · Answer

wait no there isnt