Solving System of Equations by Graphing

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Presentation transcript:

Solving System of Equations by Graphing

Learning Intention/Success Criteria LI: We are learning how to solve a system of equations by graphing SC: I know how to -determine if a system of equations has many solution(s) -determine if a system of equations has no solution -determine if a system of equations has one solution -solve system of two linear equations in two unknowns by graphing -read solutions to system of equations off the graph of two functions -graph a linear equation

Example 1: Graph the system of equations and find the solution y = -3x + 2 y = 2x – 3 (1, -1)

Example 2: Graph the system of equations and find the solution y = ½x – 3 3x + 6y = 2 _______________ No Solution 6y = 3x + 12 ___ 6 ___ 6 ___ 6 y = ½ x + 2 Talking Points: Use foldable to help (DCMAM) What are things the students notice about the shapes of the line? Equations of the line? y = ½x + 2 _______________