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5 votes
Which of the following sets of ordered pairs is a function?

{(-2, 4), (-2, 3), (-2, 2), (-2, 1)}

{(6, 1), (7, 3), (4, 2), (6, 2)}

{(8, 1), (7, 0), (7, -1), (8, 2)}

{(1, 3), (2, 4), (-1, -3), (-2, -4)}

User Semanser
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2 Answers

5 votes
the last one i believe
User Rinor
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1 vote
the last set is a function
a function can’t have the same two x values
User Wilbert
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