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Is this mapping a function or not? Picture comes with

Is this mapping a function or not? Picture comes with-example-1
User Nopileos
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2 Answers

9 votes

Answer:

It's not a function because the six are pointing twice than the other number.

User Dennisa
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4.2k points
8 votes

Answer:

No

Explanation:

If an x variable comes with 2 y components, it is not a function as it doesn't pass the vertical line test.

User Lucascaro
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3.2k points