Which of the following relations is a function?:A. { (2, 6), (3, 9), (4, 2), (3, 6) }
B. { (2, 8), (3, 6), (2, 4), (0, 2) }
C. { (3, -2), (4, 7), (-2, 5), (-4, 5) }
D. { (4, 7), (-2, 5), (1, 3), (-2, 1) }

is it a or c? I don't get it

Question

Which of the following relations is a function?:A. { (2, 6),  (3, 9),  (4, 2),  (3, 6) }
B. { (2, 8),  (3, 6),  (2, 4),  (0, 2) }
C. { (3, -2),  (4, 7),  (-2, 5),  (-4, 5) }
D. { (4, 7),  (-2, 5),  (1, 3),  (-2, 1) }

 is it a or c? I don't get it

lgbasallote · Answer

look at the x coordinates

in A the x coordinates are 2, 3, 4 and 3

in C the x coordinates are 3. 4. -2. -4

which one has no repetition?

anonymous · Answer

Oh i didn't see the one in A

lgbasallote · Answer

i assume you know the answer right ;D

anonymous · Answer

yeah