1.
Which set of ordered pairs does not represent
a function?
B
A) (4, 1), (6, 2), (7, 5), (9, 2)
(0, 5), (1, 7), (2, 9), (3, 11)
(-2, 5), (0, 2), (9,-6), (8, 7)
D (5, 5), (6, 10), (10, 15), (5, 20)