Algebra 1 Online! Henrico County Public Schools, Virginia
Module - Systems of Equations
Lesson 2 - Solving Systems by Substitution
 Lessons 1- Graphing Systems of Equations 2- Solving Systems by Substitution 3- Solving Systems by Elimination Using Addition and Subtraction 4- Solving Systems by Elimination Using Multiplication 5- Solving Systems of Inequalities by Graphing 6- Module Review
SOL
A.4e -The student will solve multistep linear and quadratic equations in two variables, including solving systems of two linear equations in two variables algebraically and graphically..
Common Core Standards
 8.EE.8a 8.EE.8b 8.EE.8c A-CED.3 A-REI.5 A-REI.6 A-REI.11
Warm-up
Lessons
Videos
Explore Learning

Geogebra

Internet Sites
1. Interactive Notes: Solving Systems by Substitution - lessons and practice problems at Regentsprep.org
2. Notes: Solving Systems by Substitution - notes at Math for Morons

Homework
Journal
1. Word Problem: Two dogs run around a circular track 300 feet long. One dog runs at a steady rate of 15 feet per second, the other at a steady rate of 12 feet per second. Suppose they start at the same point and time. What is the least number of seconds that will elapse before they are again together at the starting point? Explain your answer and/or include a diagram.
Study Guide
Other
 HCPS 2002-