Mathematics, 08.07.2019 02:10, BLASIANNkidd

Which of the following is a function?
a. {(1,1), (2,5), (-2,5), (1,-1)}
b. {(-1,1), (-2,1), (-1,3), (-4,1)}
c. {(-1,1), (-1,2), (-1,3), (-1,4)}
d. {(-1,1), (-2,2), (-3,3), (-4,4)}

Answers: 3

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Do you know the correct answer?

Which of the following is a function?
a. {(1,1), (2,5), (-2,5), (1,-1)}
b. {(-1,1), (-2...