Why isn't a vertical line a function? What test rules it out?

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asked Oct 3, 2022 225k views

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Tri Dawn · Answer 1 · 2022-10-08T11:34:17+0000

Answer: If you draw any vertical line and it intersects more than one point on the relationship, it isn’t a function. The test is called the vertical line test. Hope this helps.

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Why isn't a vertical line a function? What test rules it out?

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