What are one-to-one functions

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Horizontal Line Test If some horizontal line intersects the graph of the function more than once, then the function is not one-to-one. If no horizontal line intersects the graph of the function more than once, then the function is one-to-one. Jiwen He, University of Houston Math 1432 What are One-To-One Functions?

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What are one-to-one functions : If no horizontal line intersects the graph of the function more than once, then the function is one-to-one. Jiwen He, University of Houston Math 1432 What are One-To-One Functions?

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