Question

HELP! not sure if I answered right!

Choose all answers that are correct.
Which relations are functions?

Choose all answers that are correct

A:
x –1 1 3 3
y 2 3 4 5

B: https://static.k12.com/calms_media/media/1519500_1520000/1519820/1/85d742591e72ec63386a74e16c2ac0a82fdadee1/MS_IMC-140828-106023.jpg

C: {(−2, 4), (−1, 2), (1, 2), (3, 5)}

D: https://static.k12.com/calms_media/media/1519500_1520000/1519821/1/e1a0ce49653470ed700d1ce979324c70759ed447/MS_IMC-140828-106024.jpg

I'm pretty sure it's C, but I'm not 100% sure. Please help!

Answer 1

I think it's C and D

Answer 2

how would you define a function?