Finding Solutions to Linear Equations

The video tutorial explores systems of equations, focusing on determining the number of solutions. It reviews slope and Y-intercept in slope-intercept and standard forms, and explains how these concepts relate to graphing lines. The tutorial discusses different types of solutions, such as lines that cross once, never cross, or overlap completely. Through examples, it illustrates how to identify the number of solutions without graphing, emphasizing the importance of slope and Y-intercept. The video concludes with a summary of key points and encourages practice to master these concepts.

What is a system of equations?

• A single equation with one variable

• An equation with no solutions

• A set of equations with the same variables

• A graph with multiple lines

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

In slope-intercept form, what does the 'm' represent?

• The x-intercept

• The y-intercept

• The slope

• The constant term

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How do you find the y-intercept in standard form?

• Set y to zero and solve for x

• Set x to zero and solve for y

• Divide the constant term by the coefficient of x

• Divide the constant term by the coefficient of y

What determines the tilt of a line?

• The y-intercept

• The slope

• The x-intercept

• The constant term

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CCSS.8.EE.B.6

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If two lines have the same slope but different y-intercepts, what is true about them?

• They will intersect at one point

• They will never intersect

• They are the same line

• They will intersect at multiple points

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What does it mean if two lines have different slopes?

• They will never intersect

• They will intersect at one point

• They are the same line

• They are parallel

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CCSS.8.EE.C.8B

What is the result when two lines have the same slope and the same y-intercept?

• They are the same line

• They are parallel

• They will never intersect

• They intersect at one point

How many solutions exist if two lines are parallel?

• One

• None

• Infinitely many

• Two

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CCSS.8.EE.C.8B

What should you check first to determine the number of solutions without graphing?

• The x-intercepts

• The slopes

• The y-intercepts

• The constant terms

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CCSS.8.EE.C.8B

What does it mean if you get a result like 5=5 when solving a system of equations?

• There is one solution

• There are no solutions

• There are infinitely many solutions

• The system is inconsistent

Tags

CCSS.8.EE.C.8B