AU2 Day Solving Systems of Equations by Elimination (1).notebook
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October 16, 2018
Do Now! • Take out your IMN, CW from yesterday, textbook p. 381 and a calculator
• Clear everything else off your desk!• TOC: pg. 5253, Solving System of Equations using Elimination
AU2 Day Solving Systems of Equations by Elimination (1).notebook
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October 16, 2018
Solving Systems of Equations by Substitution Textbook p. 381
AU2 Day Solving Systems of Equations by Elimination (1).notebook
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October 16, 2018
There is an easier way to solve systems of equations without having to use proofs and justification. It is called the Elimination Method. This method is similar to the method you use to solve equations. In the elimination method you either add or subtract the equations to get an equation in one variable.
AU2 Day Solving Systems of Equations by Elimination (1).notebook
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October 16, 2018
Solving Systems of Equations Using Elimination 1. Equations --> standard form, ax + by = c.
2. Which variable you want to eliminate. > same/opposite terms?!?
– When coefficients are...« opposites...you add« equal...you subtract
> Can you multiply one/both equations to create equivalent equations?
3. Add /Subtract equations and solve
4. Substitute answer into one of the original equations and solve.
5. Write answer as an ordered pair.
2x + 3y = 11
2x + 5y = 13
IMN p. 52
AU2 Day Solving Systems of Equations by Elimination (1).notebook
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October 16, 2018
2.) 6x + 5y = 19 3.) 4x + 5y = 35
2x + 3y = 5 3x + 2y = 9
IMN p. 53
AU2 Day Solving Systems of Equations by Elimination (1).notebook
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October 16, 2018
Work Time: 1. EDpuzzle, Solving Systems with Elimination by Addition2. Glue notes on p. 52 in your IMN. 3. Textbook:> p. 389: 6 11> p. 396: 6 8> p. 397: 9 11
4. EDpuzzle, Best Method
