SOLUTION: Is a circle a 'function' - it does not pass the vertical line test. tks!

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Question 213768: Is a circle a 'function' - it does not pass the vertical line test. tks!

Answer by drj(1380) About Me  (Show Source):
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Is a circle a 'function' - it does not pass the vertical line test. tks!

Yes. You are correct. But it is an equation like x%5E2%2By%5E2=1 centered at (0,0) or radius 1. So at x=0 then y has two possible values at +1 and -1.

Hope that was helpful!.

I hope the above steps were helpful.

And good luck in your studies!

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Respectfully,
Dr J