Question

HURRY!! Which set of ordered pairs represents a function?

A. (-1, 4), (2, 4), (8, 4), (10,4)}
B. {0, -2), (3,7), (0, 2), (18,2)
C. f(-1,3), (-1, -1), (-1, -12), (-1,0)}
D. {(1, 2), (2, 3), (3, 4), (3,5)}

Answer 1

A

Explanation:

A function cannot have 2 points on the same x point, and so every coordinate on A's set is different (-1, 2, 8, 10)