Exploring Slopes of Parallel and Perpendicular Lines

What is the main focus of this geometry lesson?

• Slopes of parallel and perpendicular lines

• Volume of 3D shapes

• Angles and their properties

• Area and perimeter calculations

Which variable is used to represent slope?

• S

• N

• P

• M

Tags

CCSS.8.EE.B.5

How do you calculate the slope between two points?

• x2 - x1 over y2 - y1

• y2 - y1 over x2 - x1

• x1 - x2 over y1 - y2

• y1 - y2 over x1 - x2

Tags

CCSS.8.EE.B.5

What must be true for two lines to be parallel?

• Their slopes must be undefined

• Their slopes must be zero

• Their slopes must be equal

• Their slopes must be opposite reciprocals

Tags

CCSS.8.EE.B.5

Given points (2, 3) and (4, 7), what is the slope of the line passing through these points?

• 2

• 1/2

• 4

• 3/2

Tags

CCSS.8.EE.B.5

What is the product of the slopes of two perpendicular lines?

• 1

• -1

• Undefined

• 0

Tags

CCSS.8.EE.B.6

If a line has a slope of 2/3, what is the slope of a line perpendicular to it?

• 3/2

• 2/3

• -3/2

• -2/3

Tags

CCSS.8.EE.B.6

How do you find the y-intercept when writing the equation of a line?

• Use the distance formula

• Use the midpoint formula

• Use the x-intercept

• Use the slope and a point on the line

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the equation of a line with slope 1/2 passing through point (4, 1)?

• y = 2x - 1

• y = 2x + 1

• y = 1/2x - 1

• y = 1/2x + 1

What is the slope of a line perpendicular to a line with slope -2?

• 2

• -1/2

• 1/2

• -2

Tags

CCSS.8.EE.B.6