Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Ecuaciones Y Sistemas De Ecuaciones
In Spanish. Practice how to solve system of equations graphically with this interactive activity.
Other
Forces on Bridges: Mathematical Model
This resource presents information about the mathematical model of forces on bridges. Examples of a classroom activity are provided. The resource also involves using matrices to solve systems of equations.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Cramer's Rule in Action
This site provides a specific example of Cramer's Rule. The site does not explain why Cramer's Rule works, yet does a fair job of expressing the method to reach the answers.
Alabama Learning Exchange
Alex: What's Wrong With Global Climate Change?
Students will identify factors that affect the solubility of a salt and test one of the factors (temperature). They will apply their experience to ocean salinity, the effects of temperature on the composition of ocean water, and what...
Cool Math
Coolmath: Cramer's Rule for 3x3's
Use this tutorial to learn how Cramer's Rule works for 3 x 3.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 16 [Pdf]
Learners identify the graphs of a system of linear equations and then solve the system. The practice exercise is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 17 [Pdf]
Learners solve a system of linear equations using the elimination method. The practice exercise is available in PDF format.
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."
ClassFlow
Class Flow: Linear Equations Substitution
[Free Registration/Login Required] In this Flipchart, students are introduced to linear equations, substitutions, and graphing linear equations on a coordinate grid system.
Sophia Learning
Sophia: Finding Intersections: Lesson 2
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 2 of 5 in the series titled "Finding Intersections."
Sophia Learning
Sophia: Finding Intersections: Lesson 3
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 3 of 5 in the series titled "Finding Intersections."
Sophia Learning
Sophia: Finding Intersections: Lesson 5
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 5 of 5 in the series titled "Finding Intersections."
Khan Academy
Khan Academy: Equations & Inequalities Word Problems
HSA-CED.A.1: Interactive resource which create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions, and simple rational and exponential functions....
CK-12 Foundation
Ck 12: Algebra: Systems of Linear Equations in Three Variables
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving a system of equations in three variables (x, y, and z).
Purple Math
Purplemath: Systems of Linear Inequalities
This Purplemath lesson describes how to solve a system of linear inequalities by graphing.
Math Medics
S.o.s. Math: Gaussian Elimination
In this lesson, the Gaussian Elimination method is used to solve systems of linear equations. Provides several formulas and examples for understanding.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 13 [Pdf]
The practice exercise has students solve a system of linear equations and identify the graphs of the equations. The graphs are available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 14 [Pdf]
The practice exercise has students solve a system of linear equations and identify the graphs of the equations. The graphs are available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 15 [Pdf]
Learners identify the graphs of a system of linear equations and then solve the system. The practice exercise is available in PDF format.
Washington State University
Washington State University: Sample Problems From Intermediate Algebra
Check for college math readiness using this problem sampler. Problems cover high school algebra topics, including linear and quadratic equations, factoring, radicals, rational expressions, synthetic division, complex numbers and more....
Purple Math
Purplemath: Systems of Linear Equations: Definitions
Covers the basic definitions involved in systems of linear equations.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 9 [Pdf]
The exercise has learners identify the graphs of two linear equations and then solve the system of equations using the elimination method. The practice problem is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 10 [Pdf]
The exercise has learners identify the graphs of two linear equations and then solve the system of equations using the elimination method. The practice problem is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 7 [Pdf]
Students label two different linear graphs and solve the system of equations. The exercise is available in PDF format.