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.
Activity
Analyze Math

Analyze Math: Cramer?s Rule to Solve Systems of Equations

For Students 9th - 10th Standards
Learners are introduced to the Algebra II topic of solving systems of linear equations. The tutorial proves Cramer?s rule of solving 2 by 2 systems of equations. The activity includes a defintion and an example with a detailed solution.
Activity
Free Math Help

Free Math Help: Systems of Linear Equations

For Students 9th - 10th Standards
The Algebra II session explores systems of linear equations. Students learn how to solve the problems algebraically and graphically.
Handout
University of St. Andrews (UK)

University of St. Andrews: Gabriel Cramer

For Students 9th - 10th
Information about the life of Gabriel Cramer (1704-1752 CE), 18th century mathematician credited with "Cramer's Rule," though "Cramer was certainly not the first to give this rule."
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...
Lesson Plan
Texas Instruments

Texas Instruments: Solve Linear Systems by Graphing, Substitution, Elimination

For Teachers 9th - 10th Standards
Students will solve systems of linear equations by a variety of methods: graphing, substitution, and elimination. The questions are multiple-choice and fill-in-the-blank.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Solving Linear Systems Using Matrices and Technology

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers using a graphing calculator and matrices to solve a system of equations.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Problem Solving Using Linear Systems

For Students 9th - 10th Standards
Ten problems present practice using problem-solving with linear systems in real-world situations. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Solving Systems of Linear Equations in Three Variables

For Students 9th - 10th Standards
This tutorial will show you how to solve a system of linear equations in three variables by using the elimination method. Complete with definitions, example problems with step-by-step solutions, and practice exercises for you to complete...
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.
Handout
Other

Morgan State: Linear Algebraic Equations and Matrices

For Students 9th - 10th Standards
This site gives information on linear equations and matrices. Among the topics discussed are the substitution method, Gauss-Jordan Elimination Method, matrix operations, matrix multiplication, and inverse matrices.
Activity
Government of Alberta

Learn Alberta: Linear Systems Graph

For Students 9th - 10th
Learn Alberta helps students visually explore various solutions of systems of two linear equations by allowing students to manipulate lines and view their numeric and graphic solution(s) or absence. The applet identifies the solutions as...
Handout
Oswego City School District

Regents Exam Prep Center: Solving Systems Using Addition or Subtraction

For Students 9th - 10th Standards
Three examples are used to demonstrate solving a system of linear equations algebraically using addition and subtraction. The examples cover different situations that occur with the coefficients of the variable terms. Includes several...
Activity
Texas Instruments

Texas Instruments: Simultaneous Equation Solver App

For Teachers 9th - 10th
Students use this App to calculate solutions (a unique solution, no solution, or an infinite number of solutions.unique) for linear systems. They can work with systems that contain both numeric and symbolic coefficients and have up to 30...
Activity
Texas Instruments

Texas Instruments: Solving Systems of Linear Equations by Elimination

For Teachers 9th - 10th
Students will solve systems of linear equations by elimination.
Activity
Texas Instruments

Texas Instruments: Solving a System of Linear Equations

For Teachers 9th - 10th
In this activity, students' will collect and analyze motion data in order to determine the solution to a linear system of equations. They graph two motions on a common axis and find their intersection.
Unit Plan
Stefan Warner and Steven R. Costenoble

Finite Mathematics & Applied Calculus: Systems of Two Linear Equations in Two Unknowns

For Students 9th - 10th Standards
The tutorial examines systems of two linear equations in two unknowns. Students learn about the concepts through class notes, examples, and practice problems. Topics include elimination method, infinitely many solutions, and no...
Lesson Plan
Khan Academy

Khan Academy: Lsn 13: Systems of Equations, Algebraic and Graphical Representations

For Teachers 9th - 10th Standards
Lesson 3 of 4 for Passport to Advanced Math. Learners will solve systems of equations in two variables in which one equation is linear and the other equation is quadratic or another nonlinear equation; relate properties of the function f...
Activity
Texas Instruments

Texas Instruments: Solving Systems of Equations: The Method of Elimination

For Teachers 9th - 10th Standards
Whenever a system of n equations with n unknowns is given there are several methods that can be used to find the solution to the system if a solution exists. In this activity, you will use the method of elimination to solve systems of...
Unit Plan
Khan Academy

Khan Academy: Linear Systems of Equations Capstone

For Students 7th - 8th Standards
Solve systems of equations with any number of solutions using any solution method. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Activity
Texas Instruments

Texas Instruments: Solving Systems of Equations

For Teachers 9th - 10th Standards
In this activity, students explore Three different methods for solving linear systems on Voyage 200.
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.
Unit Plan
Stefan Warner and Steven R. Costenoble

Finite Mathematics & Applied Calculus: Applications of Systems of Linear Equations

For Students 9th - 10th Standards
Students learn a general strategy for solving all applications of linear equations. The tutorial consists of class notes, examples, and practice problems. Review exercises and a chapter quiz are included.
Activity
Texas Instruments

Texas Instruments: Matrices and Linear Equations

For Teachers 9th - 10th Standards
This Computer Algebra System (CAS) activity encourages students to investigate addition, subtraction, and multiplication of matrices. They find the inverse of a matrix. Students also solve a set of linear equations by using matrices.

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