SOLUTION: Can some one plese help me, I do not understand how to do this.. Thanks in advance. Which of the following sets are functions from the set of the first components to the set of

Question 168487: Can some one plese help me, I do not understand how to do this.. Thanks in advance.
Which of the following sets are functions from the set of the first components to the set of second components?

� { (b,a), (d,c), (a,e), (g,f) }
� { (a,b), (b,a), (c,c), (a,c) }
� { (b,a), (c,a), (b,b), (c,b) }

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Which of the following sets are functions from the set of the first components to the set of second components?
� { (b,a), (d,c), (a,e), (g,f) } this is a function
� { (a,b), (b,a), (c,c), (a,c) } not a function because "a" has two y-values
� { (b,a), (c,a), (b,b), (c,b) } not a function because "b" has two y-values
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Cheers,
Stan H.
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