Question 328603: Dtermine whether each relation is a function. In addition, provide reasons for identifying a relation as a function.
1. {(3,4),(5,9),(9,9),(2,3)}
2. {(0,0),(0,1),(1,4),(2,4)}
3. {(2,1),(4,5),(8,4),(1,0)}
4. {(8,3),(8,0),(7,7),(4,7)}
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Dtermine whether each relation is a function. In addition, provide reasons for identifying a relation as a function.
1. {(3,4),(5,9),(9,9),(2,3)}::: is a function
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2. {(0,0),(0,1),(1,4),(2,4)}::: is not because x=0 is matched with 2 y-values
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3. {(2,1),(4,5),(8,4),(1,0)}::: is a function
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4. {(8,3),(8,0),(7,7),(4,7)}::: is not because x=8 is matched with 2 y-values
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Criteria: each value of x has just one corresponding value of y
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Cheers,
Stan H.
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