Question

Which set of ordered pairs does not represent a function?

A)\{(0, 9), (-1, -2), (-5, 2), (-3, 0)\}{(0,9),(−1,−2),(−5,2),(−3,0)}
B)\{(0, -6), (-6, 5), (4, 5), (5, 7)\}{(0,−6),(−6,5),(4,5),(5,7)}
C)\{(0, 8), (-7, -1), (4, 8), (1, 5)\}{(0,8),(−7,−1),(4,8),(1,5)}
D)\{(4, -6), (9, -7), (9, -4), (6, 3)\}{(4,−6),(9,−7),(9,−4),(6,3)}

Answer 1

Explanation:

D. It fails the vertical line test when x=9.

Answer 2

D

Explanation:

(9,-7) and (9,-4). it is 2 Y for 1 X