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  1. The Vertical Line Test Explained in 3 Easy Steps - Mashup Math

    Nov 11, 2022 · Quickly learn how to use the vertical line test to determine whether or not a graph of a relation is a function. Several vertical line test examples included!

  2. Vertical Line Test - Definition, Uses, Examples - Cuemath

    The vertical line test satisfies the definition of a function: for every domain x value, there is only one range y value for the function. The vertical line x = a, if it cuts the curve y = f (x) at only one point (a, f …

  3. Use the vertical line test to identify functions | College Algebra

    The vertical line test can be used to determine whether a graph represents a function. If we can draw any vertical line that intersects a graph more than once, then the graph does not define a function …

  4. Vertical Line Test - GeeksforGeeks

    Jul 23, 2025 · Vertical Line Test is a simple method used in mathematics to determine whether a given graph represents a function. The test involves drawing a vertical line through different points on the …

  5. Vertical Line Test - ChiliMath

    Learn about the Vertical Line Test and how it can be used to determine whether a given relation is a function or not. Find out why this method supports the definition of a function.

  6. Vertical line test - Wikipedia

    In mathematics, the vertical line test is a visual way to determine if a curve is a graph of a function or not. A function can only have one output, y, for each unique input, x.

  7. The vertical line test to determine if a relation is a function. To use ...

    If you think about it, the vertical line test is simply a restatement of the definition of a function. Definition of a function: Every x value has a unique y value.

  8. Using the Vertical Line Test to Identify Functions

    Learn how to use the vertical line test to determine if a relation is a function.

  9. Vertical Line Test Made Simple for Graphing Functions

    Dec 14, 2025 · Learn how the vertical line test works, see clear examples, and understand how it differs from the horizontal line test when identifying functions.

  10. Vertical Line Test Lesson - GreeneMath.com

    We can use the vertical line test to determine if we have a function. Since we can draw a vertical line and impact the graph in more than one location, this is not the graph of a function. The domain can …