Picture the solution. The Mathispower4u Algebra I video uses three examples of finding the solution of a system of linear equations given as a graph. Pupils use their knowledge of linear graphs to also identify the equations for the two graphed lines.

Concepts

graphing systems of equations, solving systems by graphing, systems of equations, systems of linear equations, slope-intercept form

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Instructional Ideas

• Conduct a mini-lesson on the meaning of being a solution to a system
• Lead a discussion on when solving by graphing may not be the best choice

Classroom Considerations

• Individuals should be able to convert linear equations into slope-intercept form

• This video is hosted on YouTube

Pros

• Uses colors to identify the different lines
• Provides mathematical terms to describe the types of systems such as consistent and independent

Cons

• None

Common Core

SL.8.2 SL.9-10.2 MP6 MP7 8.EE.C.8.a 8.EE.C.8.b HSA-REI.C.6