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Why is (3,4),(5,10),(3,12) not a function
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Why is (3,4),(5,10),(3,12) not a function

User Abby Chau Yu Hoi
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A function has a property such as "one input must be mapped to exactly one output." An input is the x-value, and the output is, generally, the y-value. In this set of points above, the input 3 maps to 4 and 12, and therefore is not a function.
User Dimitar Nikovski
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