- accessor functions
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functions to extract values from a data structure
- axis
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a number line on a scatter plot, used to place points that represent pairs of values in data sets
- contract
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a statement of the name, domain, and range of a function
- domain
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the type or set of inputs that a function expects
- function
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a mathematical object that consumes inputs and produces an output
- range
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the type or set of outputs that a function produces
