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?
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.