SOLUTION: If the domain is 2,1,3,5 and the range is 7,27,19,20,10. Is this correspondence a function?

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Question 1008857: If the domain is 2,1,3,5 and the range is 7,27,19,20,10. Is this correspondence a function?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If the domain is 2,1,3,5 and the range is 7,27,19,20,10. Is this correspondence a function?
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There are more y-values than x-values.
One of those x-value must have 2 y-values.
Therefore:: not a function.
Cheers,
Stan H.
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