Question

look at this set of ordered pairs: (12, 4) (18, -4) (7, -18) (19, 9) (13, 16) (11, -4) is this relation a function? yes no

Explanation:

Step1: Recall function definition

A relation is a function if each input (x - value) has exactly one output (y - value).

Step2: Check x - values

List the x - values: 12, 18, 7, 19, 13, 11. All x - values are unique (no repeated x - values). So each x has only one y.

Answer:

yes