Question

What is the domain of the relation? {(0, –1), (1, –2), (1, 0), (1, 2), (2, 1)} {A, B, C, D, E} {0, 1, 2} {–2, –1, 0, 1, 2}

Answer 1

{0, 1, 2}

Explanation:

Domain is basically your x values. In this case, you only have 0, 1 and 2, so you use {} brackets to denote that it's just those numbers and nothing in between.

Answer 2

The domain is the set of X values, which are the first number in each set of parenthesis. If there is more than one identical value, you don't need to list them all, just once.

{(0, –1), (1, –2), (1, 0), (1, 2), (2, 1)}

The X values are 0 , 1 , 1, 1, 2

There are three 1's, but it only needs to be listed once.

The domains are {0, 1, 2}