Question

The domain of the following relation: R: {(6, −2), (1, 2), (−3, −4), (−3, 2)} is

{−3, −3, 1, 6}

{−4, −2, 2, 2}

{−4, −2, 2}

{−3, 1, 6}

Answer 1

A domain is the set of x values in the relation. So, looking at our relation, it has x values of 6, 1, and -3. So the answer would the fourth one, although the first one could also be correct, because there are two points with -3 as the x value.