Posted below is the answer key to the substitution homework that was due today.
If you would like additional practice with solving systems of equations by substitution or elimination, here are some resources:
In addition, if you need a blank copy of the Elimination Practice homework, here it is:
- Khan Academy, solving systems with substitution (this requires a login, but it's free!)
- Solving Systems by Substitution worksheet with answer key
- Khan Academy, solving systems with elimination
- Solving Systems by Elimination worksheet with answer key
- Systems of Equations problems in context, worksheet with answer key
In addition, if you need a blank copy of the Elimination Practice homework, here it is: