Question

What is the domain of the relation given by the ordered pairs?

(2,-1), (-4, 1), (-2,-1), (3,-3), (2,3)
O (-4,-2,2,3)
O (-3,-1, 1,3)
O(-4,-1, 1,3)
O (-3,-2,1,3)

Answer 1

{-4, -2, 2, 3}

Explanation:

The domain is the set of first numbers in the pairs, so includes 2, -4, -2, 3, 2. When we write this as a set, we eliminate duplicates. Often, we list them in order: {-4, -2, 2, 3}