Question

Find the domain of the relation:

{(–5, –4), (–2, –1), (1, 0), (2, 2), (4, 3)}


A.
{–5, –4, –2, –1, 0, 1, 2, 3, 4}


B.
{–5, –2, 1, 2, 4}


C.
{–4, –1, 0, 2, 3}


D.
{–4, –1, 2, 3}

Answer 1

The person above is right B is the right answer

Answer 2

To work through a problem like this, first find how many ordered pairs you’re given. In this case, it’s 5.

The answer will always match the amount of ordered pairs given, IF no two x-values are the same. For this scenario, each x-value is unique, so you will have an answer with exactly 5 values. This rules out A and D.

From there, just take the x-value of each ordered pair, list ‘em in order, and you get your answer.

B is the correct answer