Algebra I
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Solving Systems by the Elimination Method
Posted on Jan 28, 2010
Topic: Linear Systems
Students use slider arrows to help understand how to use equivalent equations and the method of elimination to solve a system.
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Activity Key Steps:
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Students will identify equivalent equations to solve a system of linear equations in two unknowns by the elimination method. Students will visualize the change in each equation when increased by a multiplier.
Students will use slider arrows to change multipliers for a system of equations. They will use linear combinations in an effort to produce a zero sum coefficient for one of the variables and solve the resulting equation for the other. Students will learn how to combine elimination and substitution to solve systems efficiently.