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Published byOphelia Boone Modified over 9 years ago

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TODAY IN ALGEBRA… Learning Goal: 7.3 You will solve systems of linear equations by Elimination Independent Practice MID CH.7 TEST-MONDAY/TUESDAY!

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION STEPS FOR SOLVING A LINEAR SYSTEM BY ELIMINATION: STEP 1: Align the variables with x and y on the same side of each equation. Then ADD or SUBTRACT the equations. STEP 2: SOLVE the equation for the remaining variable. STEP 3: Substitute the solution from STEP 2 into either equation to solve for given variable. THIS IS MUCH EASIER WITH AN EXAMPLE!

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION Different signs: ADD

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION Same signs: SUBTRACT

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION Different signs: ADD

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION Same signs: SUBTRACT

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION Different signs: ADD

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION Same signs: SUBTRACT

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7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION Different signs: ADD

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HOMEWORK #3: Pg. 447: 4-22 even If finished, work on other assignments: HW #1: Pg. 430: 3-10, 12-15, 22, 23, 32 HW #2: Pg. 439: 4-24 even, 31

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