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Lesson Plan

Solve a system of equations by substitution

teaches Common Core State Standards CCSS.Math.Content.HSA-REI.C.6
teaches Common Core State Standards CCSS.Math.Practice.MP2
teaches Common Core State Standards CCSS.Math.Practice.MP5
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Big Ideas: You can use substitution when given equations in slope-intercept form to solve a system of equations. Students will look at a context of two friends driving at different rates. They will use substitution to solve a system of equations when it is written in slope-intercept form. This builds off of prior knowledge of writing equations from context and leads to solving a system from that context. Vocabulary: system of equations, substitution Special Materials: none
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