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Two Variable Systems of Equations and Inequalities

Solving real-world problems using systems of equations and inequalities.

Mapped to CCSS Section# HSA.REI.C.5, HSA.REI.C.6

Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions. Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables.