Solving Systems of Equations by Graphing pt 1

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
7505 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In part 3 of solving linear systems of equations with two variables, students learn how to solve systems of equations by graphing. This method involves graphing two linear equations on the same graph and finding their intersection. There are three possibilities for the intersection of the lines: they intersect at one point, they are parallel (meaning no solution), or they are the same line (meaning infinitely many solutions). Through an example problem, students learn how to graph two lines and find their point of intersection to solve the system.

Lesson Description:

Part 3 of Solving Linear Systems of Equations with 2 variables. Includes examples using the Graphing Method.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you solve systems of linear equations by graphing?
  • How do you find the intersection of two lines by graphing them?
  • How do you find the solution to a system of equations by graphing?
  • What are the three possibilities when you graph systems of equations?
  • What is an inconsistent system?
  • What is a dependent system?
  • What happens if you graph two lines and they are parallel and do not cross?
  • What happens if you graph two lines and they are the same line?
  • When are there no solutions or infinitely many solutions to a system of equations?
  • How can you find the solution to y = -3x and 2x - y = -5 by graphing?
  • How can you check your solution to a system of equations?
  • Staff Review

    • Currently 4.0/5 Stars.
    This is a very complete overview of solving systems of equations by graphing. Every scenario is explained, and the concept of finding the intersection point of lines is explained. An example problem is also shown in this lesson. This would be a perfect introduction to solving systems of equations using the graphing method.