One to one functions - Relations and Functions

One to one functions



\bullet To determine if an expression is a function, we perform the vertical line test.

\bullet Surjective/Onto: For every yy value, there exists at least one xx value.

\bullet Injective/Into/one-to-one: For every yy value, there exists at most one xx value.

\bullet To determine if a function is one-to-one, we perform the horizontal line test.

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One to one functions

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