1. Homework Review: Sect 6.4 # 8 – 18 even

2. Section 6.5 applications of systems of equations
solving application problems using systems of equations.
SWBAT:

3. Which method to choose?
Graphing: a useful method to approximate a solution and having a visual model. Use when equations are in slope-int form.
Substitution: use when you have one variable that has a coefficient of 1 (x or y is by itself)
Linear Combination/Elimination: use when the coefficients are larger than 1.

4. Ex. 1: Solve using all three methods
2x + 3y = 5
4x – y = 3

5. Ex. 2: Which method is better?
x + 3y = -3
4x – 5y = 5
x – y = 9
7x + y = 7
y = 2x – 1
y = ½x – 1

6. Ex. 3: Applications pg 364 #2 y = 3x + 50 y = 5x + 0
Jared has volunteered 50 hours and plans to volunteer 3 hours in each coming week. Clementine is a new volunteer who plans to volunteer 5 hours each week. Write and solve a system of equation to find how long it will be before they will have volunteered the same amount of hours.
y = 3x + 50
y = 5x + 0

7. Homework
Section 6.5
#’s 6 – 13