Graphical Solutions to Systems of Linear Equations

The video tutorial explains how to determine the solution to a system of linear equations graphically. It covers identifying solutions as points of intersection, matching equations to lines based on slope and intercept, and understanding scenarios with no solutions. Several examples are provided to illustrate these concepts, including cases with parallel lines and different slopes.

What is the graphical representation of the solution to a system of linear equations?

• The area between the lines

• The slope of the lines

• The midpoint of the lines

• The point where the lines intersect

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CCSS.8.EE.B.5

If a line has a positive slope, how does it appear on a graph?

• It is vertical

• It goes downhill from left to right

• It is horizontal

• It goes uphill from left to right

Which line corresponds to the equation y = 2x + 9?

• The line with a positive slope

• The line with a negative slope

• The line with an undefined slope

• The line with a zero slope

What is the solution to the system if the x-coordinate is 1 and the y-coordinate is -3?

• (1, 3)

• (-1, -3)

• (-1, 3)

• (1, -3)

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CCSS.8.F.A.3

CCSS.8.EE.B.6

How do you convert x + y = -2 into slope-intercept form?

• y = x - 2

• y = -x + 2

• y = -x - 2

• y = x + 2

What does it mean if two lines are parallel on a graph?

• They never intersect

• They form a right angle

• They intersect at one point

• They have different slopes

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CCSS.8.EE.B.6

How do you determine which line corresponds to an equation if the lines are parallel?

• By comparing their slopes

• By comparing their vertical intercepts

• By comparing their angles

• By comparing their lengths

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CCSS.8.EE.B.5

What is the slope of the line represented by the equation y = 1/2x - 9/2?

• -1

• -1/2

• 1

• 1/2

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CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Which line increases faster: one with a slope of 1 or one with a slope of 1/2?

• The line with a slope of 1

• The line with a slope of 1/2

• Neither increases

• Both increase at the same rate

What is the solution to the system if the x-coordinate is 3 and the y-coordinate is -3?

• (-3, -3)

• (3, -3)

• (-3, 3)

• (3, 3)