1. Solving Systems by Substitution

2. Objective
The student will be able to solve systems of equations by substitution.

3. Exploration
Solving Systems of Equations by Substitution Exploration

4. Solving Systems by Substitution
You can solve systems of equations by substituting one equation into the other.
For example:
To solve this type of system you can simply set them equal to each other.
See how y equals both 3 and 2x+1?

5. Try with a Partner…
Solve the following system by substitution:

6. Try With a Partner…
Solve the following system by substitution:

7. Substitution Continued…
Sometimes, systems are not always solved in slope intercept form…
Example:
See how you can sub in first equation for y in the second?
Now we have x we can solve for y.

8. Try with a Partner…
Solve the following system by substitution:

9. Try With a Partner…
Solve the following system by substitution:

10. On your own…
Solve the following system by substitution:

11. On your own…
Solve the following system by substitution:

12. Homework and Exit Ticket
Solve the following:
Homework:
Worksheet