Solving Using Elimination
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Embracing Mathematics, Assessment & Technology in High Schools; A Michigan Mathematics & Science Partnership Grant Project
Andrew and Anne Gloag, This chapter covers solving systems of equations graphically, Created: Jan. 18, 2010, http://www.ck12.org/flexr/search/Linear%20systmes%20of%20Equations/
Holt, Rinehart, & Winston. "Systems of Equations." http://my.hrw.com/math06_07/nsmedia/homework_help/alg1/
alg1_ch06_03_homeworkhelp.html (accessed August 4, 2010)