Solving Systems of Equations with Substitution
Grade 9th Grade · Math · 45 min
What's Included
Learning Objective
I can solve systems of linear equations using substitution.
Warm-Up Video
Khan Academy · 9:21
Solving linear systems by substitution | Algebra Basics | Khan Academy
Guided Notes
3 key concepts
- 1
The substitution method involves solving for one variable in one equation and substituting that expression into the other equation.
- 2
When using substitution, the goal is to create a single equation with one unknown variable.
- 3
After solving for one variable, substitute that value back into either of the original equations to solve for the remaining variable.
Practice Questions
8 questions · Short answer
Exit Ticket
Quick comprehension check
“Solve the system of equations using substitution: x + 3y = 10 and 2x + 4y = 20. Show all steps.”
Complete Lesson Package
Get all 3 ready-to-use resources:
Teacher Guide
Student Doc
Slides
