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Is this a function or not a function​

Is this a function or not a function​-example-1
User Lewistrick
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2 Answers

10 votes
10 votes

Answer:

Not a Function

Explanation:

It fails the vertical line test where each input has one output. Take x=0 for example. At x=0, y=4,-4. This input has two outputs so it is not a function.

User Farhad Jabiyev
by
2.7k points
26 votes
26 votes

Answer:

No, not a function.

Explanation:

The graph touches the vertical line more than once.

User Shroud
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2.8k points