Alg. 1 6-3 Part 2
Presentation
•
Mathematics
•
9th - 12th Grade
•
Medium
Eduardo Olivas
Used 3+ times
FREE Resource
7 Slides • 2 Questions
1
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Using Subtraction to Eliminate
●
If you have an equation that has the same coefficient at
the same variable, but the sign is the same you will have
to SUBTRACT one equation from the other
●
It doesn’t matter which one you subtract
2
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SLIDESMANIA.COM
Example
Use elimination to solve the system of equations
3
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SLIDESMANIA.COM
Example
Use elimination to solve the system of equations
4
Multiple Choice
4x + 6y = -4
no solution
(2,0)
(-4,0)
(0,0)
5
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SLIDESMANIA.COM
Example
Use elimination to solve the system of equations
6
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SLIDESMANIA.COM
Use elimination to solve the system of equations
Example
7
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SLIDESMANIA.COM
Real World Scenario
A group of friends that are at a baseball game are
purchasing souvenirs. Ms. Couch purchased 4 t-shirts and 5
baseball caps, spending a total of $254. Mr. Mavity
purchased 4 t-shirts and 1 baseball cap, which cost him a
total of $118. Assuming all of the t-shirts and all of the caps
are the same price, what is the price of each?
8
Open Ended
Answer?
9
SLIDESMANIA.COM
SLIDESMANIA.COM
SLIDESMANIA.COM
SLIDESMANIA.COM
Using Subtraction to Eliminate
●
If you have an equation that has the same coefficient at
the same variable, but the sign is the same you will have
to SUBTRACT one equation from the other
●
It doesn’t matter which one you subtract
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