Solving Systems of Linear Equations Using Elimination

This video tutorial demonstrates how to solve systems of linear equations using the elimination method. It covers three examples, each illustrating different scenarios and techniques for eliminating variables to find solutions. The video emphasizes the importance of adjusting equations and using multiplication to facilitate elimination, ultimately leading to the solution of the system as an ordered pair.

What is the main goal of the elimination method in solving systems of linear equations?

• To graph the equations

• To find the slope of the lines

• To multiply the equations

• To eliminate one of the variables

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In the first example, which terms are eliminated directly?

• X terms

• None of the terms

• Both X and Y terms

• Y terms

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CCSS.8.EE.C.8B

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What operation is performed on the bottom equation in the second example to make the X terms cancel out?

• Subtraction

• Addition

• Division by 2

• Multiplication by -1

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CCSS.8.EE.C.8B

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After eliminating the X terms in the second example, what is the value of Y?

• 16

• -8

• -16

• 8

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In the third example, what numbers are the top and bottom equations multiplied by to eliminate the X terms?

• 3 and -3

• 4 and -4

• 2 and -5

• 5 and -2

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CCSS.8.EE.C.8B

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What is the value of Y in the third example after elimination?

• -1

• 1

• 2

• -2

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CCSS.8.EE.C.8B

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Which equation is used to find the value of X after Y is found in the third example?

• Top equation

• Bottom equation

• Both equations

• Neither equation

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CCSS.8.EE.C.8B

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What is the final ordered pair solution for the third example?

• (1, 2)

• (2, 1)

• (-2, -1)

• (-1, -2)

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CCSS.8.EE.C.8B

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What is the significance of the ordered pair solution in a system of linear equations?

• It is the midpoint of the lines

• It is the y-intercept of the lines

• It is the point where the lines intersect

• It represents the slope of the lines

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CCSS.8.EE.C.8A

What should viewers do if they find the video helpful?

• Share with friends

• Subscribe to the channel

• Like the video

• All of the above

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