SAT Parallel/Perpendicular Lines

Slopes of parallel lines are...

• opposite reciprocals.
• opposites.
• the same.
• always 7.

Slopes of perpendicular lines are...

• opposite reciprocals.
• opposites.
• the same.
• always 7.

y = -2/3x + 2
y = 3/2x + 9
These lines are...

• Parallel
• Perpendicular
• Neither

Which of the following lines goes through the point (0, 4) and is parallel to y = 5x - 3?

• y = 1/5x - 3
• y= 5x - 7
• y = 5x + 4
• y = -5x - 3

Which of the following lines goes through the point        (-3, 4) and is perpendicular to  y = 3/2x + 6?

• y = 3/2x - 6
• y = 2/3x + 3
• y = -2/3x - 2
• y = -2/3x + 2

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

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

• Parallel
• Perpendicular
• Neither

Write the equation of a line PERPENDICULAR to the line y = 3x + 2 that passes through the point (9, -2)

• y = -1/3x - 5

• y = 3x-29

• y = 1/3x -5

• y = -1/3x +1

Write the equation of the line PARALLEL to the line y = 4x - 9 that passes through the point (-2, 4)

• y = 4x + 12

• y = -4x -4

• y = -1/4x + 5/2

Are line A and line B parallel, perpendicular, or neither if:

line A goes through (-1,2) and (3, -6) and

line B has an equation of 3y = -6x + 9?

• parallel

• perpendicular

• neither