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25 votes
Which of the following relations is a function?

A.
(8, 1), (-1, 4), (1, 1), (8, 2)

B.
(1, 4), (-1, 2), (8, 1), (-6, 2)

C.
(1, 0), (-1, 3), (8, 1), (-1, 5)

D.
(1, 4), (-1, 6), (1, 3), (-6, 2)

2 Answers

10 votes
The answer is B as in Boy
User Mehdy
by
7.2k points
5 votes

Answer:

B

Explanation:

The first components should not be duplicates, otherwise the second components should be the same. Therefore, the second option is correct.

User Kevin McKelvin
by
7.2k points