Question

The domain of the following relation: R: {(3, −2), (1, 2), (−1, −4), (−1, 2)} is

1. {−1, 1, 3}

2. {−1, −1, 1, 3}

3. {−4, −2, 2, 2}

4. {−4, −2, 2}

Answer 1

The domain is the set of inputs.


The inputs are the x values of each ordered pair and they are: 3, 1, -1


So the domain is choice 1. {-1, 1, 3}