Which sets of ordered pairs represent relations that are functions? You may choose more than one correct answer.
((1.0), (2.0), (3, 0). (4,0)]
(2, 3), (2, 4), (2,5), (2. 6))
[(1, 1), (2, 2), (3, 3), (4,4)}
[(1,3), (-1, 4), (1.4), (-1,3)}
[(6-6). (-6, 6), (5,-5), (-5,5)}