3.1 graphing systems
- 1. 3.1 Graphing.notebook September 10, 2012 Objective: use graphing to solve systems of equations Agenda 1. WU 2. Notes 3. Homework Warm Up 4. Test back Solve for y. 5x + 3y = 15 Systems of Linear Equations in Two Variables Graphing and Substitution GRAPHING 1. Write the equation in slope intercept form 2. Graph yint (b) 3. From yint use slope (m) to find another point 4. Draw a line (with straight edge) 5. Repeat steps 1 4 for the second equation 6. Find point of intersection 7. Write the solution as an ordered pair (x, y) It is extremely important to draw straight lines or your lines will not intersect. 1
- 2. 3.1 Graphing.notebook September 10, 2012 3 Cases m = m = m = b = b = b = 1. 3x 4y = 12 x + 4y = 4 2
- 3. 3.1 Graphing.notebook September 10, 2012 2. x 2y = 1 3x 6y = 3 3. 3x y = 3 3x + y = 5 3