warm - up are you smarter than a 4 th grader???: there are three times as many dogs as birds there...
Post on 04-Jan-2016
213 Views
Preview:
TRANSCRIPT
Warm - Up
Are you smarter than a 4th grader???:
• There are three times as many dogs as birds
• There are 5 more cats than birds
• There are 24 cats
• How many dogs are there?
Alg2 Lesson 3-6Systems with 3 variables
Objectives:
1. Solve a system with 3 variables using elimination or substitution.
Graphs of Systems with 3 variables
Steps for Solving Systems of 3 Variables
• Use the first two equations and solve for one of the variables ( call new equation #4)
• Use the last two equations and solve for the same variable (call new equation #5)
• Use the two new equations (#4 and #5) and solve for one variable
• Substitute your known variable into equation #4 or #5 to solve for a second variable
• Substitute both known variables into one of the original equations to find final unknown variable
• Simple example:
2 3 6x y z 2 0y z
2z
Pg 159 1 – 9 odd
top related