Khan Academy
Khan Academy: Solving Linear Systems by Substitution
This video demonstrates how to solve a system of linear equations by using the substitution method.
Khan Academy
Khan Academy: Solving Systems of Equations by Elimination
This video gives two examples of how to solve systems of equations by elimination.
Khan Academy
Khan Academy: Algebra I Worked Examples: Solving Systems by Graphing 2
The video [3:26] examines systems of equations. Students watch an example on how to solve systems by graphing.
Khan Academy
Khan Academy: Solving Systems Through Examples: Graphically Solving Systems Ex 2
This video demonstrates how to use a graph in order to determine the number of solutions for a system of linear equations.
Khan Academy
Khan Academy: Solving Systems Through Examples: Graphically Solving Systems
This video demonstrates how to graph a system of equations and identify how many solutions it has.
Khan Academy
Khan Academy: Solving Systems Through Examples: Graphing Systems of Equations
This video demonstrates how to solve a system of linear equations by graphing and finding the point of intersection.
Khan Academy
Khan Academy: Number of Solutions to Equations
See how some equations have one solution, some have no solutions, and others have infinite solutions. [5:27]
Khan Academy
Khan Academy: Quadratic Systems: Graphical Solution
Sal solves a system of a quadratic equation and a linear equation by graphing both equations and looking for their intersections, and then checks the solution algebraically. [5:44]
Khan Academy
Khan Academy: Number of Solutions to a System of Equations
Sal is given three lines on the coordinate plane, and identifies one system of two lines that has a single solution, and one system that has no solution. [3:26]
Khan Academy
Khan Academy: Number of Solutions to a System of Equations Graphically
Sal determines how many solutions the following system of equations has by considering its graph: 10x-2y=4 and 10x-2y=16. [6:36]
Khan Academy
Khan Academy: Number of Solutions to a System of Equations Algebraically
Sal solves several examples where he reasons about the number of solutions of systems of equations using algebraic reasoning. [6:01]
Sophia Learning
Sophia: Solving Linear Inequalities by Graphing #2
This lesson illustrates how to solve for linear inequalities by graphing.
Study Pug
Study Pug: Determining Number of Solutions to Linear Equations
Depending on whether and how the linear equations in a system touch each other, there will be a different number of solutions to the system. There can be one solution, no solution, and even infinite solution. Watch this video for...