Domain and range: two terms you will learn to love (or hate with a vengeance). The domain is the set of all possible x values, and range is the set of all possible y values.

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Piecewise Functions 
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Domain and Range 
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Functions as Models 
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Introduction to Functions 
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Function Rules, Tables, and Graphs 
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Relations and Functions 
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Translations and Functions 
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Graphing Square Root Functions