Lesson plan

Determine if a system of two linear equations with two variables has one solution by graphing

teaches Common Core State Standards CCSS.Math.Content.8.EE.C.8b http://corestandards.org/Math/Content/8/EE/C/8/b

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Big Ideas: By graphing a system of two linear equations, we can determine if the system has one solution. The point of intersection of two graphs is the system's solution. Students will graph a system of linear equations and determine its solution. They will convert equations to y-intercept form to assist them in their graphing. Students will be encouraged to prove their solutions using graphs and by substituting their solution into each equation of the system. Vocabulary: point of intersection, y-intercept form, simultaneously Special Materials: Graph paper