Khan Academy: Algebra: Solving Systems by Graphing 3

This video demonstrates how to solve and graph a given system of equations by eliminating a variable. [4:58]

This video demonstrates how to solve a system of linear equations by substitution. It also takes it a step further and graphs the system of equations on a coordinate grid. [6:04]

This video gives two examples of how to solve systems of equations by elimination. The first example gives the system of equation to be solved and the second example is a word problem that involves setting up and solving the system of...

This video demonstrates more examples of how to solve systems of equations by elimination. The examples in this video require that one or both equations be scaled in order to eliminate a variable. [12:00]

This video demonstrates how to use a graph in order to determine the number of solutions for a system of linear equations. [3:26]

This video demonstrates how to solve systems of two equations by graphing each line and finding the point of intersection. [8:30]

This video demonstrates how to solve a system of linear equations by eliminating a variable. The given system is of two equations in two variables. [3:45]

This video demonstrates how to solve a system of linear equations by substitution. The sample problem given has no solution. [3:44]

This video demonstrates how to set up and solve a system of equations in order to solve a word problem. The system is solved using the elimination method. [5:51]

This video demonstrates how to solve a system of linear equations by substitution. Example problem is of two equations in two variables. [4:06]