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OpenStudy (anonymous):
Which of the following relations is a function? A. (2,4), (-5, 6), (2, 3), (-8, 2) B. (2,4), (-5, 2), (5, 1), (-8, 2) C. (2,0), (-5, 3), (5, 1), (-5, 5) D. (5,1), (-5, 4), (2, 1), (5, 2)
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OpenStudy (mathmate):
Follow the same rule (duplicate x cannot have different y-values) and you'll spot it in no time.
OpenStudy (anonymous):
Can you tell me the answer please im not very sure if im right...
OpenStudy (mathmate):
Did you notice that in the second one, all x-values are different? That's your guy.
OpenStudy (anonymous):
ooooh!
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