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AssignmentMultiple Choice

Using Function Notation

Question 1 • CUSD Math 01 A (5.0)

What is the domain of the following function represented by ordered pairs?{(4, 9), (–6, 1), (–2, 5), (3, 1)}

Answer
A
{5, 9}
B
{1, 5, 9}
C
{–6, –2, 3, 4}
D
{–6, –2, 1, 3, 4, 5, 9}

Explanation

The domain of a relation is the set of its input values, which are the first numbers in each ordered pair. From (4, 9), (–6, 1), (–2, 5), and (3, 1), those values are 4, –6, –2, and 3. Therefore, the domain is {–6, –2, 3, 4}, choice C.

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