Function Basics
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http://library.thinkquest.org/2647/algebra/funcbasc.htm  


David Eger; Interactive Mathematics Online (IMO)  
Functions are mathematical ideas that take one or more variables and produce a variable. In an abstract mathematical sense, a function is a mapping of some domain onto some range. For each item in the domain, there is a corresponding item in the range of the function. Thus the domain is all of the possible inputs to the function and the range is all of the possible outputs. Each item in the domain corresponds to a specific item in the range. However, an item in the range may correspond to multiple items in the domain...  


Levels:  High School (912), College 
Languages:  English 
Resource Types:  Lesson Plans and Activities 
Math Topics:  Graphing Equations, Graphing of Functions 
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