Alg. 1 6-3 Part 2

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Using Subtraction to Eliminate

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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

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It doesn’t matter which one you subtract

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Example

Use elimination to solve the system of equations

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Example

Use elimination to solve the system of equations

Multiple Choice

-4x - 6y = 6
4x + 6y = -4

• no solution

• (2,0)

• (-4,0)

• (0,0)

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Example

Use elimination to solve the system of equations

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Use elimination to solve the system of equations

Example

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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?

Open Ended

Answer?

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