SOLUTION: Is f(x)=15 or f(x)=12 a function or not?

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Question 561240: Is f(x)=15 or f(x)=12 a function or not?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Both f(x)=15 and f(x)=12 are functions since every x goes to one single y.