8. which set of ordered pairs represents a function?
a. {(-4,9), (4.0), (5,9). (4,8), (5,5)}
b.{(-4,9), (-1,0), (0,9), (-4,8), (0,5)}
c. {(-4,9), (-1,0), (0,9), (–1,8), (5,5)}
49) -10 9) (48) (5.5
n

NONE

Step-by-step explanation:

Functions do not repeat the first element of an ordered pair, relations do.

For instance the option A repeats the first element, the number 4 twice (4,0), (4,8)

option B repeats the first element, the number -4 twice (-4,9), (-4,8)

option C repeats the first element, the number -1 twice (-1,0), (-1,8)