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Lesson 21: Variation

The lesson begins with a comparison of data tables and graphs of two functions, one directly proportional (cost of gas) and the other exponential (population), before a definition for direct variation is introduced. Direct variation is then linked to linear function \(f(x)= kx\) and the scaling property of direct variation is examined (i.e. a multiple of the independent variable will always correspond to that same multiple of the dependent variable). Direct variation with a power of \(x\) follows with a test for direct variation before indirect variation and indirect variation with a power of \(x\) are introduced.

Identifier: 
http://www.curriki.org/xwiki/bin/view/Coll_Group_SanDiegoCommunityCollegesDevelopmentalMathExchange/Lesson21Variation?bc=;Coll_Group_SanDiegoCommunityCollegesDevelopmentalMathExchange.IntermediateAlgebra;Coll_Group_SanDiegoCommunityCollegesDevelopmentalMa
Rating: 
Average: 3 (301 votes)
Creator(s): 
Bruce Yoshiwara (Pierce College) and Kathy Yoshiwara (Pierce College)
Cataloger: 
Bohdan Rhodehamel
Publisher: 
Developmental Mathematics Collection
Rights: 
CC BY-NC-SA

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