Solving Systems of Linear Equations Using Substitution

Sick of ads?‚Äč Sign up for MathVids Premium
Taught by MrDickson
  • Currently 4.0/5 Stars.
7290 views | 2 ratings
Meets NCTM Standards:
Lesson Description:

Learn how to solve systems of linear equations using substitution

Questions answered by this video:
  • What is a system of linear equations?
  • How do you solve a system of equations and what does it mean to solve a system of equations?
  • How do you find coordinates of the intersection point between two lines?
  • What are the steps for solving a system of equations?
  • How do you isolate a variable in an equation?
  • How do you check your answer in a system of equations problem?
  • What is the solution to the system y = 2x and x + y = 21?
  • How do you substitute y = 2x into x + y = 21?
  • What is the solution to the system -4x + y = 6 and -5x - y = 6?
  • How do you solve a system of equations if a variable is not by itself in either equation?
  • Staff Review

    • Currently 4.0/5 Stars.
    This video is very clear and easy to follow. This is a perfect intro or refresher for learning how to solve systems of equations. This is a definite must-watch if you want to know how to solve for two variables in two linear equations.
  • contrell81

    • Currently 5.0/5 Stars.
    I really appreciate that Mr. Dickson gave steps to show how to solve the problem. That was very helpful.