imboredandtiredandla imboredandtiredandla 10-12-2020 Mathematics contestada Which of the following is NOT a function? a(2, 1), (4, 3), (6, 5), (8, 7) b (2, 1), (4, 3), (6, 5), (8, 5) c (2, 1), (4, 3), (6, 5), (2, 7) d (2, 1), (4, 1), (6, 5), (8, 7)