SOLUTION: Which one of the following is a function? 3x � y^2 = 9 3x � y = 9 3x^2 � y^2 = 9

Question 1103781: Which one of the following is a function?
3x � y^2 = 9
3x � y = 9
3x^2 � y^2 = 9
Answer by Edwin McCravy(20055) (Show Source): You can put this solution on YOUR website!



is not a function because (6,-3) and (6,3) both satisfy
 and a function cannot have two different
y-values for the same x-value.





Also





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Thus for each value of x, there is only one value of y,
since 3x-9 has but one value.

Therefore this is a function

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is not a function because (√6,-3) and (√6,3) both satisfy
 and a function cannot have two different
y-values for the same x-value.






Also







Edwin

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