A1.A.1.3

Analyze, use and apply mathematical models to solve problems involving systems of linear equations with a maximum of two variables by graphing, substitution, and elimination. Graphing calculators or other appropriate technology may be utilized. Interpret the solutions in the original context.

Example Problems
Do the following equations have the same solution?

Do the following equations have the same solution?

What is the result of adding these two equations?

Khan Academy Resources
Equivalent systems of equations reviewSystems of equations with elimination challengeSystems of equations word problems (with zero and infinite solutions)Reasoning with systems of equationsComparing linear rates word problemsSystems of equations with elimination: King's cupcakesSystems of equations with elimination: potato chipsSystems of equations with substitution: potato chipsSystems of equations with elimination (and manipulation)Systems of equations with elimination: TV & DVDIntro to graphing systems of inequalitiesReasoning with systems of equationsWorked example: equivalent systems of equationsWorked example: non-equivalent systems of equationsSystems of equations with elimination: coffee and croissantsComparing linear rates exampleSystems of equations with elimination: apples and oranges
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