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Which is a function and what is not a function?
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Which is a function and what is not a function?

Which is a function and what is not a function?-example-1
User KayakDave
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1 Answer

4 votes
Answer:

1. Not a function
2. Not a function
3. Function
4. Not a function

Why:

The best way to explain this is that every x-value has only one y-value or for the tables the first column can’t have two of the same number.

Hope this help! :)
User Ilesh Patel
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