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  • 23-03-2021
  • Mathematics
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which of the following is not a function? ANSWER FAST PLEASE!!!

which of the following is not a function ANSWER FAST PLEASE class=

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janmilczek
janmilczek janmilczek
  • 23-03-2021

Answer:

D. cannot be an f(x)=y function.

Step-by-step explanation:

An f(x) = y function has to have a specific property - there can be only one value for the same x - and the value has to be the same every time.

D. gives us all xs equal to 9, but with different ys - hence it cannot be an f(x) = y function (it could be an f(y) = x function though, but I assume that's not "allowed" under the problem statement).

B has two equal xs, but both times y=0, so it doesn't make it an invalid function.

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