ufwIVY ufwIVY 16-12-2020 Mathematics contestada which of the following relations is not a function? a. (-1, 4), (1, 2), (7, 1), (-6, 5) b. (7, 4), (-1, 2), (1, 1), (-6, 2) c. (-6, 4), (1, 3), (-1, 1), (7, 2) d. (1, 4), (-1, 2), (1, 1), (-6, 2)