Unit Plan
CK-12 Foundation

Ck 12: Algebra: Applications of Linear Systems

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] In this lesson students apply the various solution methods to solve real-world problems involving linear systems. Students watch a video tutorial, explore guided...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Linear Systems With Multiplication

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Solve linear systems using multiplication.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Linear Programming

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Solve problems involving systems of linear inequalities. The tutorial includes examples, videos, and practice questions.
Unit Plan
Khan Academy

Khan Academy: Systems of Equations Word Problems

For Students 9th - 10th
Solve word problems by modeling them into a system of equations and solving it. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Other

Math Portal: Row Reduction Method

For Students 10th - 12th
A step by step of how to solve systems of linear equations using the row reduction method.
Unit Plan
Khan Academy

Khan Academy: Systems of Equations Word Problems Capstone

For Students 9th - 10th
Solve word problems that involve systems of equations, where there can either be a single solution, no solution, or infinite solutions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Unknown Type
Khan Academy

Khan Academy: Check Solutions to Systems of Equations

For Students 6th - 8th Standards
In this exercise, students check solutions to systems of equations. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unknown Type
Khan Academy

Khan Academy: Systems of Inequalities Word Problems

For Students 9th - 10th Standards
Solve word problems that involve systems of linear inequalities. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Unit Plan
PBS

Pbs: Graphing a System of Equations

For Students 6th - 8th
Solve a number riddle by finding the point of intersection for two lines. This video focuses on finding the solution for a system of equations, they are represented as an algebraic expression and a set of linear equations that are...
Activity
Texas Instruments

Texas Instruments: Systems of Linear Equations Using Substitution

For Teachers 9th - 10th Standards
Students can use the substitution method of solving systems of linear equations.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A rei.c.6: Find a System

For Teachers 9th - 10th
The purpose of this task is to encourage students to think critically about both the algebraic and graphical interpretation of systems of linear equations. Aligns with A-REI.C.6.
Activity
Saddleback College

Algebra2 Go: Beginning Algebra

For Students 9th - 10th Standards
The resource consists of comprehensive notes, videos, and worksheets through which students can review algebra concepts.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Systems of Nonlinear Equations

For Students 9th - 10th Standards
Learn how to solve a system of nonlinear equations using the substitution and the elimination methods. This tutorial offers definitions, problems and step-by-step solutions, and practice exercises for you to complete and check.
Activity
Interactive Mathematics

Interactive Mathematics: Algebraic Solutions of Systems

For Students 9th - 10th Standards
Nonlinear systems are solved using the algebraic methods of substitution and addition/subtraction. Learn how these methods work through detailed examples.
Activity
Purple Math

Purplemath: Systems of Non Linear Equations: Definitions

For Students 9th - 10th Standards
This Purplemath lesson provides formulas, equations, graphs and explanations of systems of equations.
Activity
Lawrence Hall of Science

The Math Page: Skill in Algebra: Word Problems That Lead to Simultaneous Equations

For Students 9th - 10th
Here is a site that clearly and thoroughly explains how to solve word problems that lead to systems of equations, such as mixture, coin, investment, and upstream/downstream problems. There are example problems solved, problems for the...
Activity
Texas Instruments

Texas Instruments: Linear Inequalities: Using Algebra

For Teachers 9th - 10th Standards
Students learn to solve inequalities using one and two steps. They review the properties of inequalities.
Handout
Paul Dawkins

Paul's Online Notes: Algebra: Linear Inequalities

For Students 9th - 10th Standards
Detailed math tutorial features notes and examples that illustrate how to solve linear inequalities (both single and double) and also interval notation.
Activity
Other

Stony Brook University: Solving Linear Equations

For Students 9th - 10th Standards
The name linear comes from the fact that such an equation in two unknowns or variables represents a straight line. A set of such equations is called a system. This site explains all this and more.
Activity
Help Algebra

Help algebra.com: Substitution Method for Systems

For Students 9th - 10th Standards
Using the Substitution Method, a system of equations is solved. The process is shown in detail and can be used as a reference for solving other systems
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Linear Systems With Addition or Subtraction

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving a system by adding the two equations together to eliminate a variable.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Determining the Type of Linear System

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving a system by graphing when there is no solution or infinitely many solutions.
Article
Khan Academy

Khan Academy: Substitution Method Review (Systems of Linear Equations)

For Students 7th - 9th
This article will take you through a step-by-step approach for solving a systems of linear equations. Article also includes practice questions.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Cramer's Rule

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving systems of equations using Cramer's Rule.