Solving Systems of Equations by Substitution

Comic of the Day

Warm Up
a) Solve the system of equations graphically:
There are 10 people in this class

There are 2 more women than men


b) Graph (use points that are not fractions):

Announcements & Deadlines

• Homework (41 questions) for unit 6 due Thu, Apr 4 at 23:59
• Quiz 6 (19 questions, 90 min, 2 tries) opens Wed, Apr 3 and closes Thu, Apr 4 at 23:59
• Next unit exam (in class) Fri, Apr 5 (2 hours)

Today - Solving by Substitution
Notes
p. 199-204
Homework #14-20

Tomorrow - Solving by Elimination
Pre-read p. 205-208


For more information
http://patrickjmt.com/solving-a-linear-system-of-equations-using-substitution/
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/v/solving-systems-by-substitution-1
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/v/solving-systems-by-substitution-2
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/v/solving-systems-by-substitution-3
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/v/the-substitution-method
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/v/substitution-method-2
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/v/substitution-method-3
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/v/practice-using-substitution-for-systems
https://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/systems-with-substitution/e/systems_of_equations_with_substitution