Purple Math
Purplemath: Systems of Linear Equations: Definitions
Covers the basic definitions involved in systems of linear equations.
Texas Education Agency
Texas Gateway: Solving Systems of Equations With Graphs
Given verbal and/or algebraic descriptions of situations involving systems of linear equations, the student will solve the system of equations using graphs. Incorporates GeoGebra applets.
Oswego City School District
Regents Exam Prep Center: Linear Quadratic Systems
A lesson, practice exercise, and resource for use when planning classroom instruction on linear quadratic systems. Find definitions, example equations and graphs, a four-question quiz with solutions, and an activity through which...
Math Planet
Math Planet: Algebra 2: Solving Systems of Equations in Two Variables
Provides examples and a video lesson that illustrate how to solve systems of equations in two variables. [1:43]
PBS
Pbs: Graphing a System of Equations
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...
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....
Wyzant
Wyzant: Solving Systems of Equations by Matrix Method
Reference material with examples of how to solve system of equations by the matrix method.
University of St. Andrews (UK)
University of St. Andrews: Gabriel Cramer
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."
Hofstra University
Hofstra University: Linear Programming
This lesson is a review of problems with systems of inequalities. Many of the questions involve real world scenarios as word problems which the reader must decipher and resolve.
Illustrative Mathematics
Illustrative Mathematics: A Rei, a Ced Cash Box
In this task, learners are asked to construct equations in two variables to determine whether a loose coin beside a ticket box belongs with the money collected for tickets. They must then explain their reasoning. Aligns with A-CED.A and...
Illustrative Mathematics
Illustrative Mathematics: A rei.c.6: Accurately Weighing Pennies I
For this problem, students will use the number of decimal places in the coefficients to motivate writing and solving a system of equations. Aligns with A-REI.C.6.
Khan Academy
Khan Academy: Lsn 13: Systems of Equations, Algebraic and Graphical Representations
Lesson 3 of 4 for Passport to Advanced Math. Students 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...
Khan Academy
Khan Academy: Systems of Equations With Elimination Challenge
Solve systems of equation with multi-step elimination (e.g., a manipulation is needed in order for x-values or y-values to cancel each other out).