Which set of ordered pairs is NOT a function?
(1,2),(2,3),(3,4)(1, 2), (2, 3), (3, 4)(1,2),(2,3),(3,4)
(1,1),(2,1),(3,1)(1, 1), (2, 1), (3, 1)(1,1),(2,1),(3,1)
(1,2),(1,3),(4,5)(1, 2), (1, 3), (4, 5)(1,2),(1,3),(4,5)
(0,0),(−1,−1),(1,1)(0, 0), (-1, -1), (1, 1)(0,0),(−1,−1),(1,1)