Question

Which set of ordered pairs represents a function?

a) {(-4, 9), (-5, 4), (-5, -2), (1, -6)}
b) {(2, 6), (5, 1), (9, 4), (2, -6)}
c) {(-7, -8), (0, 1), (-3, 9), (-4, -8)}
d) {(-6, -5), (-3, -4), (6, 6), (-3, 8)}

Answer 1

Option c) {(-7, -8), (0, 1), (-3, 9), (-4, -8)} represents a function because each x-coordinate is unique and paired with a single y-coordinate.

Step-by-step explanation:

An ordered pair represents a function when each x-coordinate is paired with only one y-coordinate. In other words, there are no repeated x-coordinates with different y-coordinates.

Looking at the options, option c) {(-7, -8), (0, 1), (-3, 9), (-4, -8)} represents a function because each x-coordinate is unique and paired with a single y-coordinate.