Parallel and Perpendicular

If a line has a slope of 2/3 a line that is perpendicular has a slope of what?

• -3/2

• 3/2

• 2/3

• -2/3

If a line has a slope of -5/6 a line that is parallel has a slope of what?

• -5/6

• 6/5

• 5/6

• -6/5

If a line has a slope of 4/7 a line that is perpendicular has a slope of what?

• -7/4

• 7/4

• 4/7

• -4/7

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

Slopes of parallel lines are...

• opposite reciprocals

• opposites

• identical

• reciprocals

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• reciprocals

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.

Which of the following lines is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)?

• y=1/6x +25/6

• y = 1/6x + 4

• y = -6x - 2

• y = -6x + 4

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

• Parallel

• Perpendicular

• Intersecting (but not perpendicular)