Systematically check a solution in a system. Given a point and a system, the presenter checks to see if the point is a solution to the system. Pupils understand what it means to be a solution to a system. The video shows both algebraically and graphically that the point is a solution to the system of linear equations.

Concepts

graphing systems of equations, systems of linear equations, solutions, solving systems by graphing, systems of equations, coordinate pair

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Additional Tags

math

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Instructional Ideas

• Challenge the class to find another system that has the same solution

Classroom Considerations

• Individuals should know what it means for a point to satisfy an equation
• Assumes pupils know how to graph a linear equation

• This video is hosted on YouTube

Pros

• Works each step of the arithmetic involved after the substitution
• Uses colors to highlight the variables in the coordinate pair

Cons

• None

Common Core

SL.9-10.2 8.EE.C.8.a MP1 MP6