Question

Which relation is a function?

A. (9,-1),(-1,9),(9,2),(2,-1)

B. (8,-4),(-4,8),(-8,4),(-4,-8)

C. (5,-7),(4,6),(-3,8),(5,8)

D. (2,3),(-2,3),(3,2),(-3,-2)

Answer 1

I think the answer is B sorry if its wrong i havent had geometry