A2.A.1.7
Represent and evaluate mathematical models using systems of linear equations with a maximum of three variables. Graphing calculators or other appropriate technology may be used.
Example Problems
Do the following equations have the same solution?
Do the following equations have the same solution?
Do the following equations have the same solution?
Khan Academy ResourcesEquivalent systems of equations reviewElimination method review (systems of linear equations)Systems of equations with eliminationElimination strategiesCreating systems in contextSystems of equations word problems (with zero and infinite solutions)Reasoning with systems of equationsCombining equationsComparing linear rates word problemsSystems of equations with elimination: x-4y=-18 & -x+3y=11Systems 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 & DVDSolutions to systems of equations: consistent vs. inconsistentWhy can we subtract one equation from the other in a system of equations?Setting up a system of equations from context example (pet weights)Reasoning with systems of equationsWorked example: equivalent systems of equationsWorked example: non-equivalent systems of equationsSystems of equations with elimination: coffee and croissantsSetting up a system of linear equations example (weight and price)Comparing linear rates exampleElimination strategiesSystems of equations with elimination: apples and oranges
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