Question 319658: Which set of ordered pairs represents a function from P to Q?
P= {2,4,6,8} Q={-2,0,2}
a){(2,-2),(4,0),(4,2),(6,0),(8,-2)}
b){(6,-2),(6,0),(6,2)}
c){(6,0),(4,-2),(2,0),(4,2),(6,-2)}
d){(4,0),(6,0),(8,0)}
e){(2,2),(6,0),(2,-2),(6,2)}
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Which set of ordered pairs represents a function from P to Q?
P= {2,4,6,8} Q={-2,0,2}
a){(2,-2),(4,0),(4,2),(6,0),(8,-2)}
Not a function because f(4) has more than one value.
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b){(6,-2),(6,0),(6,2)}
Not a function because f(6) has more than one value.
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c){(6,0),(4,-2),(2,0),(4,2),(6,-2)}
Not a function because f(4) has more than one value.
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d){(4,0),(6,0),(8,0)}
Looks good.
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e){(2,2),(6,0),(2,-2),(6,2)}
Not a function because f(2) has more than one value.
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Cheers,
Stan H.
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