Question

what is the domain of this function?
(4, -6)
(-1, 10)
(5, 10)
(-3, 0)
(10, 3)

{-3, -1, 4, 5, 10}

{3, 4, 5, 10}

{-6, 0, 3, 10}

{-3, -1, 3, 4, 5}

Explanation:

Step1: Recall domain definition

The domain of a function (given as ordered pairs) is the set of all first elements (x - values) of the ordered pairs.

Step2: Identify first elements

The ordered pairs are (4, -6), (-1, 10), (5, 10), (-3, 0), (10, 3). The first elements are 4, -1, 5, -3, 10.

Step3: Form the domain set

Collect these first elements: {-3, -1, 4, 5, 10}.

Answer:

{-3, -1, 4, 5, 10} (the first option)