We offer free personalized SAT test prep in partnership with the test developer, the College Board. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. High School Math on Khan Academy: Did you realize that the word 'algebra' comes from Arabic (just like 'algorithm' and 'al jazeera' and 'Aladdin')? And what is so great about algebra anyway? This tutorial doesn't explore algebra so much as it introduces the history and ideas that underpin it.Ībout Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. In some cases, we need to slightly manipulate a system of equations before we can solve it using the elimination method. (+) Find the inverse of a matrix if it exists and use it to solve systems of linear equations (using technology for matrices of dimension 3 × 3 or greater). (+) Represent a system of linear equations as a single matrix equation in a vector variable. For example, find the points of intersection between the line y = -3x and the circle x2 + y2 = 3.

Solve a simple system consisting of a linear equation and a quadratic equation in two variables algebraically and graphically. Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. By the end of this playlist, students will be able to understand and solve problems involving linear equations. The playlist is an excellent resource for students to review or study for a test or final.

These videos each cover specific topics and concepts learned in Algebra I classes.

Teachers can use these videos to support their lesson plans and engage students. This playlist consists of 22 videos all about systems of linear equations.

Khan academy systems of equations