A17­2SolvingSystemsSubstitution.notebook
October 15, 2014
Algebra 1
Ch.7 Notes Page 37
P37 7­2 Solving Systems Using Substitution
Sep 2­8:31 AM
1
A17­2SolvingSystemsSubstitution.notebook
October 15, 2014
Using Substitution
Trying to find an x and y that works in both equations
Solve for x and y
y = ­4x + 8
y = x ­ 7
Jan 23­8:15 AM
2
A17­2SolvingSystemsSubstitution.notebook
October 15, 2014
Practice
7x ­ y = 15
y = 2x
Feb 5­8:43 AM
3
A17­2SolvingSystemsSubstitution.notebook
October 15, 2014
Substitution and Distribution Solve using Substitution
3y + 2x = 4
­6x + y = ­7
Feb 5­8:43 AM
4
A17­2SolvingSystemsSubstitution.notebook
October 15, 2014
Practice
7x ­ 8y = 112
y = ­2x + 9
.5x + .25y = 36
y + 18 = 16x
Feb 5­8:48 AM
5
A17­2SolvingSystemsSubstitution.notebook
October 15, 2014
Word Problem
Your school is planning to bring 193 people to a competition at another school. There are eight drivers available and two types of vehicles, school buses and minivans. The school buses seat 51 people each, and the minivans seat 8 people each. How many buses and minivans will be needed?
Let b = buses
Let m = minivans
Feb 5­8:43 AM
6
A17­2SolvingSystemsSubstitution.notebook
October 15, 2014
HW #42
7­2 P384 #1­13,18,24,25
Please put your name and class period at the top of the homework.
Also include the homework number.
Nov 10­3:06 PM
7