Answered

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Which of the following relations is a function?
A. {(1, 2), (1, 3), (1, 4), (1, 5)}
B. {(1, 3), (2, 3), (4, 3), (9, 3)}
C. {(5, 4), (-6, 5), (4, 5), (4, 0)}
D. (6, -1), (1, 4), (2, 3), (6, 1)}

Sagot :

This is a function because all the ordered pairs have different first coordinates
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