Equations of Parallel & Perpendicular Lines 1

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 = (-1/2)x + 1

y = (1/2)x - 5

• 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

Tags

CCSS.HSG.GPE.B.5

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

• the same.

• negative reciprocals of each other.

Tags

CCSS.HSG.CO.A.1

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

• YES
• NO

Tags

CCSS.8.EE.B.6

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

Tags

CCSS.HSG.GPE.B.5

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

Tags

CCSS.HSA.CED.A.2

CCSS.HSG.GPE.B.5

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

Tags

CCSS.8.EE.B.6

What slope is perpendicular to:  
m = 3

• -3
• -1/3
• 1/3
• 3

Tags

CCSS.HSG.CO.A.1

Which is the equation of the line that is parallel to the graph of -5x + y = 7 and has a y-intercept at (0, -2)?

• y = 5x - 2

• y = -2x + 7

• y = 5(x - 2)

• y = -1/5x - 2