Provide an inconsistent example. Learners view an algebra video demonstrating how to solve a system of linear equations by graphing. The system does not have any solutions or is inconsistent. Scholars realize that the graphs of the two equations are parallel lines.

Concepts

graphing systems of equations, solving systems by graphing, systems of equations, systems of linear equations

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Instructional Ideas

• Discuss ways to determine whether two equations are parallel lines based on their equations

Classroom Considerations

• Assumes the class understands how to graph equations in slope-intercept form
• Requires individuals to understand division of integers

• This video is hosted on YouTube

Pros

• Uses two colors to represent the two different lines
• Shows all the steps in converting an equation into slope intercept form

Cons

• None

Common Core

SL.8.2 SL.9-10.2 MP5 MP7 8.EE.C.8.a 8.EE.C.8.b HSA-REI.C.6