Which relation is a function?
A. {(1, 2), (1, 5), (1, -1), (1, 4)}
B. {(8, -1), (2, -1), (3, 8), (2, 5}
C. {(-3, 4), (-2, 5), (0, 9), (0, 12)}
D. {(7, 12), (1, -5), (3, -10), (2, -5)}
Someone please help ill give fan + medal!

Question

Which relation is a function?
A. {(1, 2), (1, 5), (1, -1), (1, 4)}
B. {(8, -1), (2, -1), (3, 8), (2, 5}
C. {(-3, 4), (-2, 5), (0, 9), (0, 12)}
D. {(7, 12), (1, -5), (3, -10), (2, -5)}
Someone please help ill give fan + medal!

perl · Answer

a function is a type of relation where an input (x value) does not have two outputs (two y values).

anonymous · Answer

so is my answer d? cus i dont get this at alll

perl · Answer

yes thats correct

perl · Answer

in the other options, the x value repeats

anonymous · Answer

so i am correct? D is the correct answer?