INSTRUCTORS Carleen Eaton Grant Fraser

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### Solving Systems of Equations by Graphing

• You can solve a system of equations by graphing the equations and finding the point of intersection of the two graphs.

• If the graphs are parallel lines, there is no point of intersection and no solution to the system.

• If the graphs are the same lines, the system has an infinite number of solutions.

• If the graphs intersect at one point, the system has a unique solution.

### Solving Systems of Equations by Graphing

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

• Intro 0:00
• Systems of Equations 0:14
• Solving by Graphing 0:34
• Types of Systems 1:07
• Independent (One Solution)
• Dependent (Infinite Solutions)
• Inconsistent (No Solutions, Parallel)
• Lecture Example 1 4:52
• Lecture Example 2 8:42