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Mathematics 7 Online
OpenStudy (anonymous):

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) }

OpenStudy (anonymous):

Letter B. Because we can say that the rule or the relations are function if there is no repetition of the domain

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