A2002A
contestada

PLEASE HELP!!!!!
Which set is a function?


{(0,3), (3,0), (0,4), (4,0)}

{(0,2), (2,0), (4,6), (6,4)}

{(2,6), (3,6), (4,6), (2,0)}


{(6,2), (2,0), (4,6), (6,4)}