Lesson 7.3a Solving by Elimination (no mult).notebook
February 15, 2013
7.3 ­ Solving Systems by Elimination
Objective:
Be able to solve systems of
equations using elimination.
Methods for Solving Systems of Equations
Graphing
Substitution
Elimination
Lesson 7.3a Solving by Elimination (no mult).notebook
February 15, 2013
Remember, we use substitution when we know what one variable equals.
x = or y = We choose elimination when it's easy to "get rid" of a variable.
Elimination Example 1
Prepare for total elimination!
Important! Notice that the x's, y's and #'s are all lined up!
What form are these equations in?
Lesson 7.3a Solving by Elimination (no mult).notebook
Elimination Example 1
Example 2
February 15, 2013