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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.
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Website
Other

Algebra.com: Linear Equation and System Solvers

For Students 9th - 10th Standards
Linear equations can be solved and graphed using this interactive site. This site allows the user to enter any linear equation in standard form and the y-intercept will be found through a step-by-step process. Systems of inequalities can...
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Handout
Oswego City School District

Regents Exam Prep Center: Solving Linear Systems Graphically

For Students 9th - 10th Standards
The method of graphing to solve a system of linear equations is demonstrated on this site. Students are shown how to graph the lines, then shown how to find the solution.
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Activity
Texas Instruments

Texas Instruments: Linear Systems: Using Algebra

For Teachers 9th - 10th Standards
Students learn to solve a system of linear equations (2 equations with 2 variables) by substitution and elimination methods. They also review the definitions of consistent (independent and dependent) and inconsistent systems, and...
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Forms of Linear Equations

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Learn how to work with linear equations in standard form.
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Unit Plan
Oswego City School District

Regents Exam Prep Center: Linear Quadratic Systems

For Students 9th - 10th Standards
Resources to use when planning instruction on linear-quadratic systems. Find lessons on solving systems algebraically and graphically, a practice quiz with solutions, and a worksheet through which students investigate and solve systems.
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Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Systems of Linear Equations in Two Var.

For Students 9th - 10th Standards
This tutorial will guide you through several tasks associated with systems of linear equations in two variables. Complete with definitions, problems with step-by-step solutions, and example exercises for you to complete and check.
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Handout
Math Planet

Math Planet: Algebra 1: Graphing Linear Systems

For Students 8th - 9th Standards
Gain an understanding of how to solve linear equations by viewing an example and a video lesson. [3:01]
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eBook
Math Planet

Math Planet: The Elimination Method for Solving Linear Systems

For Students 9th - 10th
Provides examples and a video lesson that illustrates how to use the elimination method to solve linear equations.
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Lesson Plan
Other

Metal: Linear Equations Ii [Pdf]

For Teachers 9th - 10th Standards
The resource is a lesson guide that discusses linear equations. Topics include solving simultaneous equations using graphing and algebra, and economic applications.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Comparing Methods for Solving Linear Systems

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson covers determining the best method to solve a linear system.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Consistent and Inconsistent Linear Systems

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving systems with substitution when there is no or infinitely many solutions.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Comparing Methods for Solving Linear Systems

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Decide which method is the best one to use to solve a system of linear equations.
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Unit Plan
Oswego City School District

Regents Exam Prep Center: Systems of Linear Equations

For Students 9th - 10th
This website contains tutorials that cover the methods used to solve linear equations, substitution, elimination (adding & subtracting), and graphing. The practice pages allow students to practice the skills they have learned. On the...
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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.
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Activity
Other

Algebra.com: Linear Equation and System Solvers: Solve Linear Systems

For Students 9th - 10th Standards
This interactive linear system solver allows you to enter two linear equations in general form and then plot the lines and find the answer using either substitution or elimination. The answer is presented with both methods accompanied by...
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Graphs of Linear Systems

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] Students learn to solve a linear system by graphing. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
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Activity
Paul Dawkins

Paul's Online Notes: Algebra: Systems of Equations

For Students 9th - 10th Standards
Learners examine how to solve systems of equations. Topics investigated are linear systems with two variables, linear systems with three variables, augmented matrices, and nonlinear systems. Class notes, definitions, and examples with...
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Article
Math Planet

Math Planet: The Substitution Method for Solving Linear Systems

For Students 9th - 10th
A way to solve a linear system algebraically is to use the substitution method. The substitution method functions by substituting the one y-value with the other. This resource explains this method by showing an example along with a video.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Consistent and Inconsistent Linear Systems

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Identify a system as inconsistent, consistent, or dependent and determine how many solutions a system has.
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Unknown Type
Khan Academy

Khan Academy: Systems of Linear Equations Word Problems

For Students 6th - 8th Standards
In this exercise, students practice solving systems of linear equations in word problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Forms of Linear Equations

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Write linear equations in standard form and find the slope and y-intercept of such lines.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Forms of Linear Equations

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Learn how to work with linear equations in standard form.
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Unit Plan
Khan Academy

Khan: Lesson 5: Relationships Among Linear Equations, Lines in Coordinate Plane

For Students 9th - 10th Standards
This lesson focuses on the relationship between algebraic, graphical, and contextual expressions of linear equations.