Parallel and Perpendicular Lines in the Coordinate Plane

If two lines are perpendicular to each other their slopes are ____________

• the same.

• negative reciprocals of each other.

Tags

CCSS.8.EE.B.6

Are these lines perpendicular?
y = 4x + 2
y = (-1/4)x + 12

• YES

• NO

Write an equation of a line that passes through the point (-9,2) and is perpendicular to the line y = 3x - 12

• y = (-1/3)x - 1

• y = (1/3)x - 2

• y = -3x + 12

• y = 3x - 1

Write an equation of a line that passes through the point (7,10) and is perpendicular to the line y = (1/2)x - 9

• y = -2x - 24

• y = -2x + 12

• y = -2x  + 24

• y = (1/2)x - 12

• line l

• line m

• line s

• line t

Tags

CCSS.8.G.A.5

• line l

• line m

• line s

• line t

Tags

CCSS.8.G.A.5

What is the equation of a line that is perpendicular to this line and goes through the given point?
y = 3x + 2      (3, -4)

• y = 3x - 2

• y = -1/3x - 5

• y = 3x - 4

• y = -1/3x - 3

If two lines are parallel their slopes are  ____________

• the same.

• negative reciprocals of each other.

Tags

CCSS.8.EE.B.6

Are these lines parallel?
y = 12x + 4
y = 12x +14

• YES

• NO

Tags

CCSS.HSG.CO.A.1

Write an equation of a line that passes through the point (5,-1) and is parallel to the line y = (-3/5)x -3

• y = (-3/5)x + 2

• y = (-3/5)x -2

• y = (3/5)x + 2

• y = (5/3) + 2