functions

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Algebra

Functions

GCSE Mathematics

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4 Terms

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What is a function?

A relation where each input has only one output.

2
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What is the domain of a function?

The set of all possible input values for a function.

3
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What is the range of a function?

The set of all possible output values for a function.

4
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What is the vertical line test?

A test to determine if a graph represents a function. A graph is a function if any vertical line intersects it at most once.