4
ALMultiple Choice

Functions and Their Properties

Question 4 • TX-Pre-Calculus

Which of the following ordered pairs could be in a relation that has a range of {2, 4, 5}?

Answer
A
(2, 3), (4, 1), (5, 2)
B
(5, 3), (5, 4), (5, 2)
C
(4, 3), (5, 5), (5, 2)
D
(3, 4), (5, 5), (5, 2)

Explanation

The range of a relation is the set of its second coordinates. In choice D, those coordinates are 4, 5, and 2, so the range is exactly {2, 4, 5}. The other choices have different second-coordinate sets.

AI-written and checked against the verified answer.

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