Solving Systems by Graphing
Students graph two lines, find and check where they cross, and tell one, no or infinitely many solutions apart.
Systems of Equations · Lesson 3 of 6
Solving Systems by Substitution
Students substitute one equation into the other, distribute, combine like terms, and solve for both variables.
Look inside: preview PDFWhat's included
- Animated PowerPoint lesson
- Guided notes and problems
- 3 leveled practice pages (A, B, C)
- Find the Mistake
- Exit tickets
- Game of All Games
- Full answer keys
- Teacher guide
- Student pages in PDF and editable PowerPoint
- Grades
- 8th–9th grade
- Standards
- CCSS 8.EE.C.8b
More Systems of Equations Lessons
Solving Systems by Setting Equations Equal
When both equations are solved for y, students set them equal, solve for x, then find y.
Solving Systems by Elimination
Students add or subtract to eliminate a variable, then multiply one or both equations to make opposites.
Special Cases - No Solution and Infinitely Many
Students solve equations and systems that are always, never or once true, and see what that means for the lines.
Systems of Equations Word Problems
Students turn two pricing plans into equations, graph them, and find when the costs match and which deal is better.