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]
Khan Academy
Khan Academy: Solving a System of 3 Equations and 4 Variables Using Matrix
Sal solves a linear system with 3 equations and 4 variables by representing it with an augmented matrix and bringing the matrix to reduced row-echelon form.
Khan Academy
Khan Academy: Solving Systems of Linear Equations Harder Example
Watch [4:29] Sal work through a harder Solving systems of linear equations problem.
Khan Academy
Khan Academy: Solving Systems of Linear Equations Basic Example
Watch [1:56] Sal work through a basic Solving systems of linear equations problem.
Sophia Learning
Sophia: Finding Intersections: Lesson 1
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 1 of 5 in the series titled "Finding Intersections."
Sophia Learning
Sophia: Solving Linear System by Graphing
This video tutorial demonstrates how to solve a linear system of equations by graphing. The lesson includes detailed examples.
Study Pug
Study Pug: Money Related Questions in Linear Equations
Show me the money! In this video, we are going to solve some linear equations word problems that are related to money. [5:36]