Warm Up #.

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Presentation transcript:

Warm Up #

Homework Check

Solve by Graphing Worksheet Work in pairs to complete the Investigation. You will have 30 minutes to complete this before we go over it.

Solving Systems by Graphing

Review: The solution to a system of linear equations is the point where the two lines intersect.

Copy and Complete the table for the graphs of two linear equations.

Practice – Solve the system by graphing 1) y = 2x + 6 y = 4x + 4 Graphing calculator screen shots on next slide

Graphing Calculator

2. Solve by graphing (use your calculator!!!) y – 3x = 10 y = 3x – 4 Hopefully students will notice that the lines have the same slope and not have to graph them to see the solution.

3) Solve by graphing (use your calculator!!!) 3x – 2y = 4 y = -2x + 5

4) Solve by graphing (use your calculator!!!) -4x + y = 3 x + y = -2

5) 6) 2x – y = 1 4x – 2y = 2 y = 2x – 3 -4x + 2y = -6