Question

The domain of the following relation: R: {(3, 5), (8, 6), (2, 1), (8, 6)} is (1 point) No domain exists {1, 5, 6} {3, 8, 2, 8} {2, 3, 8}

Answer 1

Answer: Last option.

Explanation:

By definition, the Domain is the set of all the x-coordinates of the ordered pairs (input values) and the Range is the set of all the y-coordinates of the ordered pairs (output values)

In this case you have the following relation:

`R:`{
`(3, 5), (8, 6), (2, 1), (8, 6)`}

You can identify that the set of all the x-coordinates is:

{
`3,8,2,8`}

You can observe that the input value 8 appears twice, but you only need to write it once.

Therefore, the Domain of that relation is:

`Domain:`{
`2,3,8`}

Answer 2

Domain means all the x - values included in a set of data:

{(3, 5), (8, 6), (2, 1), (8, 6)}

It is unnecessary to put two of the same numbers. You only need to put one.

{2, 3, 8}

Hope this helped!

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