Standard(s): A.REI.C.5: Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions. A.REI.C.6: Solve systems of linear equations exactly and approximately (e.g., with grap), focusing on pairs of linear equations in two variables.I can use function notation to show that when f(x)=y and g(x)=y that f(x)=g(x).
Essential Question: In what ways can the problem be solved, and why should one method be chosen over another?
Learning Target: I can define systems of equations.(Knowledge) I can solve a system of two equations in two variables by elimination.(Application) I can define solutions of systems of equations.(Knowledge) I can explain why some linear systems have no solutions.(Comprehension) I can identify linear systems with no solutions.(Comprehension) I can explain why some linear systems have infinite solutions.(Comprehension) I can identify linear systems with infinite solutions.(Comprehension) I can solve a system of linear equations algebraically to find an exact solution.(Application) I can find an exact solution to a system of linear equation by graphing.(Knowledge) I can explain that a point of intersection on the graph of a system of equations is the solution to both equations.(Comprehension) I can use function notation to show that when f(x)=y and g(x)=y that f(x)=g(x).(Application) I can explain that the value making f(x)=g(x) true is the x coordinate of the intersection point.(Comprehension)
Warm-Up:Notes: Click on the image below for the PDF of the notes 6.4 Elimination Using Multiplication Video:Click below for the Classroom Lesson - 6.4 Elimination Using Multiplication Watch this video on Elimination Using Multiplication - Watch the video on Solving systems of Equations.
Activities:Click on the image below for an activity - Elimination Using Multiplication Click on the image below for a Game - Elimination Using Multiplication Assessment/Homework:pg. 358 7-19 odd, 30 |

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