11/5: Parallel & Perpendicular Lines

Level 1

What is the slope of a line that is perpendicular to y = 2x - 7?

• -2

• 1/2

• -1/2

• 2

Level 2

y = 3x +2

y = 3x - 3

These lines are...

• Parallel

• Perpendicular

• Neither

• The same line

Level 2

Choose ALL the lines PARALLEL to the following line: y = 2/9x - 7

• y = 2/9x + 8

• y = 9/2x -12

• -2y = 9x + 8

• 9y = 2x -18

Level 2

Which equation is perpendicular to:

y = -6x +2

• y = 6x +1

• y = 1/6x +4

• y = -6x +3

• y = -1/6x +5

Level 2

Which equation is parallel to:

y = 5/7x +2

• y = -7/5x +1

• y = 7/5x +4

• y = -5/7x -3

• y = 5/7x +5

Level 2

y = -2/3x + 2

y = 3/2x + 9

These lines are...

• Parallel

• Perpendicular

• Neither

Level 3

Which two equations below are parallel?

• y = 2x + 1 and y = -1/2x + 1

• y = 2x + 3 and y = -2x + 3

• y = 2x - 1 and y = 1/2x - 1

• y = -x + 4 and y = -x + 2

Level 3:

Which line is perpendicular to

y = x + 9 ?

• y = - x + 8

• y = ¹/₂x + 9

• y = ^-1/₂x + 9

• y = x - 9

y = 6x + 2
y = -6x + 2
These lines are...

• Parallel
• Perpendicular
• Neither

Write an equation that is PARALLEL to the line y = x - 5 through (1, -2)

• $y=-3x+1$

• $y=x-3$

• $y=x+1$

• $y=3x+1$