1. Graphing System of Equations Section 7.1

2. How can system of equations help to solve real world problems How is a “System” of equations solved by observing the graph of the equation? What indicates a system of linear equations to have either no solutions, or an infinite number of solution or one solution? Essential Question

3. Graphing system of equations. System of equations means to graph more than one linear equation on the same coordinate plane. If there is an intersection, this indicates a solution. 4y = 5x + 12 2x + y = 7 y = -x + 3

4. Graphing system of equations. x + y = 4 2x – y = 5 3x + 2y = 8 4x – y = 1

5. Graphing system of equations. y = 3x + 1 x + y = 5 15x – 5y = 30 y = 2x + 3

6. Graphing system of equations. x + y = 6 3x – y = 2 y = x + 3 y = -4x

7. Graphing system of equations. 9x – y = -7 6y – 2x = 12

8. Practice: ixl.Com Algebra 1 U.2 85% smart score Graphic organizer. Column one Kuta worksheet equations solved for “y” Punchline 8.1 problems