# How do you find the domain and the range of the relation, and state whether or not the relation is a function {(–2, 4), (5, 8), (3, 6), (5, 9)}?

##### 1 Answer

Nov 20, 2015

See explanation.

#### Explanation:

If the relation is given as set of pairs, then:

Domain is the set of all **first** elements of pairs. In this case it is:

Range is the set of all **second** numbers. In this case:

To check if this relation is a function you need to check the following condition:

"For every element **one and only one** element

This relation is **not** a function because this condition is not met. Element **two** corresponding values (