Types of functions and definitions

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Last updated 11:58 AM on 5/25/26
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7 Terms

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Horizontal line test

Shows whether function is injective, bijective, surjective or both

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Injective function

Line hits function once

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Bijective

Line hits function twice, includes surjective functions

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Surjective

Line hits function at least once

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Domain

All of the possible inputs

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Co-domain

All of the possible outputs

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Range

All of the actual outputs from inputs