Perpendicular and Parallel Lines

Are the lines shown parallel. perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

The two lines are _____________________.

• Parallel

• Perpendicular

• Neither

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

• Parallel

• Perpendicular

• Neither

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• reciprocals

What slope is parallel to:

m = 4

• 4

• -1/4

• -4

• 1/4

What slope is perpendicular to:

m = -3

• -3

• -1/3

• 1/3

• 3

Select all that are true.

• Parallel lines never intersect.

• Parallel lines intersect at a right angle.

• Perpendicular lines never intersect.

• Perpendicular lines intersect at a right angle.

Determine the equation of a line perpendicular to y=-3x-2 and going through the point (9, 2), in slope-intercept form.

Write an equation that is parallel to 
y = -2x + 4
and runs through the point (-3, 2 )

• y = - 2x - 4

• y = - 2x - 8

• y = - 2x + 4

Are these lines parallel, perpendicular, or just intersecting (but not perpendicular)?

• Parallel

• Perpendicular

• Intersecting (but not perpendicular)