Question

Look at the ordered pairs. (14,2) (12,-5) (13,0) (9,-4). is this relation a function

Answer 1

Yes, it is!

Explanation:

How to know if the ordered pairs is a function? Just look at the x values! If any of the x values repeat more than 1 time, then it is not a function. In this relation, none of the x values repeat more than 1 time, so this is a function!

Here are the ordered pairs on a graph (it passes the vertical line test):