Question

Is the relation a function? {(14, 9), (15, 8), (8, 7), (1, 9), (15, 2)}

yes or no?

Answer 1

No

Explanation:

In order for a group of points to be considered a function, there has to be one exact y value for each x value. In other words, the same x value can't appear twice in the relation. Since 15 appears twice in the relation, it is not a function.