Interactive
Algebraic Functions: Vertical Line Test Interactive
CK-12 Foundation

Algebraic Functions: Vertical Line Test

For Students 8th
To be (a function) or not to be (a function). An easy-to-use interactive has pupils drag a vertical line onto several graphs to determine if they represent functions. Some challenge questions assess understanding of this idea.
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Interactive
Coolmath: The Vertical Line Test Interactive
Cool Math

Coolmath: The Vertical Line Test

For Students 9th - 10th
Explanation and examples for using the vertical line test.
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