Purple Math
Purplemath: Cramer's Rule
Cramer's Rule for solving a system of equations is presented here using an example of a system in three variables with three equations. The "everything," approach of solving for all three variables is shown as well as the "selective,"...
Other
Hong Kong University of Science and Technology: Augmented Matrix
Demonstration of how an augmented matrix is used to solve a system of linear equations.
Math Drills
Math drills.com: Algebra Worksheets
Download these worksheets to sharpen your algebraic skills. Sheets focus on missing numbers, translating, simplifying and evaluating algebraic phrases, rewriting formulas, solving linear equations, systems of linear equations and inverse...
Sophia Learning
Sophia: Equations for the Circle: Lesson 3
This lesson presents the standard form and the general form for the equation of a circle, and relates the two. It is 3 of 5 in the series titled "Equations for the Circle."
Sophia Learning
Sophia: Equations for the Circle: Lesson 5
This lesson presents the standard form and the general form for the equation of a circle, and relates the two. It is 5 of 5 in the series titled "Equations for the Circle."
Sophia Learning
Sophia: Using Elementary Row Operations to Solve Systems of Equations: Lesson 4
This lesson presents how to use elementary row operations to solve for a system of linear equations. It is 4 of 4 in the series titled "Using Elementary Row Operations to Solve for Systems of Equations."
CK-12 Foundation
Ck 12: Algebra: Determining the Type of Linear System
[Free Registration/Login may be required to access all resource tools.] Solve a system and use the result as a guide to identify its type.
Khan Academy
Khan Academy: Interpret Equations Graphically
Practice the connection between the graphical representation of equations and their algebraic solutions.
CK-12 Foundation
Ck 12: Algebra: Linear Inequalities in Two Variables
[Free Registration/Login may be required to access all resource tools.] Graph linear inequalities to find solutions.
![Pbs Mathline: Stressed to the Breaking Point Lesson Plan [Pdf] Lesson Plan](https://static.lp.lexp.cloud/images/attachment_defaults/resource/large/FPO-knovation.png "Pbs Mathline: Stressed to the Breaking Point Lesson Plan [Pdf] Lesson Plan")
PBS
Pbs Mathline: Stressed to the Breaking Point Lesson Plan [Pdf]
Students explore how much weight a spaghetti bridge can support and whether width and length matter. Printable lesson.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Sistemas De Ecuaciones Lineales
In Spanish. Learn the algebraic language to represent and solve systems of two linear equations with two unknowns.
Illustrative Mathematics
Illustrative Mathematics: A Rei Quinoa Pasta 3
For this problem, young scholars must determine how much of a quinoa-based gluten-free pasta is actually quinoa. They must study the ingredient list and set up linear equations to solve the problem. Aligns with A-REI.C.6.
Wolfram Research
Wolfram Math World: Ode With Constant Coefficients
This math site discusses how to solve a system of diferential equations.
Paul Dawkins
Paul's Online Notes: Augmented Matrices
Here are good examples of the Gauss-Jordan elimination method to solve systems of equations.
Texas Instruments
Texas Instruments: Boats in Motion
In this lesson, students make observations about the motion of a boat going up and down the river. They will solve the system of equations algebraically and graphically.
Illustrative Mathematics
Illustrative Mathematics: A ced.a.3: Dimes and Quarters
This task requires students to recognize the pairs of linear equations in two variables that would be used to solve a given system of equations. Aligns with A-CED.A.3.
Khan Academy
Khan Academy: Solutions of Inequalities Graphically
Given the graph of a two-variable linear inequality, check whether a given pair of values is a solution of the inequality. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or...
Khan Academy
Khan Academy: Solutions of Inequalities: Algebraic
Given a two-variable linear inequality, check whether a given pair of values is a solution of the inequality. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Texas Instruments
Texas Instruments: Glencoe Algebra 2: Augmented Matrices
Students will solve systems of linear equations.
PBS
Pbs Learning Media: Meadows or Malls?
The lesson plan investigates how to use matrices to solve a complex linear programming problem. Educators can download printable version of the lesson plan in pdf format.
ClassFlow
Class Flow: Solving Systems Using Elimination
[Free Registration/Login Required] This flipchart shows students how to solve systems of linear equations using elimination.
Richland Community College
Richland Community College: Math 116 Lecture Notes
This site from the Richland Community College provides the detailed lecture notes to a college algebra course, complete with equations and definitions. Content ranges from "functions and their graphs" to "conics and parametric equations."
Texas Instruments
Texas Instruments: Getting Started With the Ti Navigator System: River of Life
This lesson introduces students to Activity Center and is intended to help students develop the conceptual understanding of how to identify functions as linear or nonlinear and contrast their properties from tables, graphs, or equations.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Augmented Matrices
Seventeen problems present a variety of practice working with augmented matrices. 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 Solution" button...