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.

26 Lesson(s)

Algebra I » Unit: Systems of Linear Equations
Washington, DC
Environment: Urban

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Stacking Cups: Systems of Equations Real World Application

Algebra I » Unit: Systems of Linear Equations
Algebra I » Unit: Systems of Linear Equations
Washington, DC
Environment: Urban

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Students use data to create equations describing a concrete scenario. Students analyze the equations as a system to solve a problem.

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Reflections (5)

Algebra I » Unit: Systems of Linear Equations
Washington, DC
Environment: Urban

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Reflections (1)

Bring in the Sub!: Solving Systems of Equations in 2 Variables

Algebra I » Unit: Making Informed Decisions with Systems of Equations
Algebra I » Unit: Making Informed Decisions with Systems of Equations
Salem, MA
Environment: Urban

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Students complete group work on engaging real-world problems and provide constructive feedback to their peers through a gallery walk!

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Algebra I » Unit: Systems of Equations
Rogers, AR
Environment: Rural

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Define, Set, Go!

Algebra I » Unit: Systems of Equations
Algebra I » Unit: Systems of Equations
Rogers, AR
Environment: Rural

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Resources (11)

Reflections (1)

Job Offers and Cell Phone Plans: Making Informed Decisions with Mathematics

Algebra I » Unit: Making Informed Decisions with Systems of Equations
Algebra I » Unit: Making Informed Decisions with Systems of Equations
Salem, MA
Environment: Urban

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Reflections (3)

Elimination with 2 Column Notes

Algebra I » Unit: Systems of Equations
Algebra I » Unit: Systems of Equations
Rogers, AR
Environment: Rural

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In this lesson students write 2-column notes as they work to increase retention of process and concepts.

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Resources (10)

Algebra I » Unit: Systems of Linear Equations
Washington, DC
Environment: Urban

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Resources (20)

Reflections (1)

Unit Test: Systems of Equations and Inequalities in 2 Variables

Algebra I » Unit: Making Informed Decisions with Systems of Equations
Algebra I » Unit: Making Informed Decisions with Systems of Equations
Salem, MA
Environment: Urban

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Maximizing Profit: An Introduction to Linear Programming

Algebra I » Unit: Systems of Equations and Inequalities
Algebra I » Unit: Systems of Equations and Inequalities
Boston, MA
Environment: Urban

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Study Session for Unit Test on Systems of Equations and Inequalities in 2 Variables

Algebra I » Unit: Making Informed Decisions with Systems of Equations
Algebra I » Unit: Making Informed Decisions with Systems of Equations
Salem, MA
Environment: Urban

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SUPPLEMENT: Linear Programming Application Day 1 of 2

Algebra I » Unit: Systems of Equations and Inequalities
Algebra I » Unit: Systems of Equations and Inequalities
Boston, MA
Environment: Urban

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Reflections (2)

Fitness Center Question

Algebra I » Unit: Systems of Equations
Algebra I » Unit: Systems of Equations
Amherst, NY
Environment: Suburban

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Resources (12)

Reflections (1)

Practice Solving Systems Algebraically

Algebra I » Unit: Systems of Equations
Algebra I » Unit: Systems of Equations
Amherst, NY
Environment: Suburban

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Common Core Math