Question

What is the domain and range of the relation
shown in the table? Is the relation a function?

Answer 1

The domain is the set of all possible x values:

`D=\{-3, -1, 2, 4, 5\}`

The range is the set of all possible y values:

`D=\{0, 2, 4, 6\}`

The relation is a function, because you're associating one y value for each x value (i.e. you're not mapping twice the same x value)