# How do you find the domain and range and determine whether the relation is a function given {(2,1), (-3,0), (1,5)}?

##### 1 Answer

Jun 30, 2017

#### Answer:

See explanation.

#### Explanation:

The **domain** is the set of 1st coordinates in the pairs' set.

Here we have

The **range** is the set of 2nd coordinates in pairs.

Here it is:

The condition of being a function is:

For **each** argument in the domain there must by **only one** value assigned to it.

Here this condition is met.

If we added for example a pair **not** be a function because it would have 2 values **the same** argument (1).