SOLUTION: true or false is this a function (2,-7),(0,2),(-7,3),(2,5)

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Question 1027843: true or false is this a function (2,-7),(0,2),(-7,3),(2,5)
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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What is a function?
Each x must have exactly one y value result.
Look at each x value (first number of ordered pair)
Is there an ordered pair where the first value has more than one second value?
If so, it is not a function.
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