Exploring Slopes of Parallel and Perpendicular Lines

What is the slope of a line that rises 3 units and runs 6 units?

• 1/2

• 3

• -1/2

• -3

If two lines have the same slope, what can we conclude about them?

• They intersect at a right angle

• They are parallel

• They are perpendicular

• They are horizontal

What is the slope of a line parallel to y = -3x + 5?

• -1/3

• 1/3

• -3

• 3

Which of the following is true for two non-vertical lines to be parallel?

• Their slopes are negative reciprocals

• Their slopes are equal

• Their slopes are both zero

• Their slopes are undefined

What is the slope of a line that is perpendicular to a line with a slope of 2/3?

• 2/3

• -2/3

• 3/2

• -3/2

If a line has a slope of -3/2, what is the slope of a line perpendicular to it?

• 2/3

• -3/2

• 3/2

• -2/3

What is the negative reciprocal of 1/5?

• 1/5

• -5

• 5

• -1/5

Which of the following equations represents a line perpendicular to y = 1/5x + 2?

• y = 5x + 71

• y = -1/5x + 71

• y = -5x + 71

• y = 1/5x - 71

If two lines have slopes of 4 and -1/4, what is their relationship?

• They are coincident

• They are parallel

• They are neither parallel nor perpendicular

• They are perpendicular

What must be true for a quadrilateral to be a parallelogram?

• All angles must be right angles

• Diagonals must be equal

• All sides must be equal

• Opposite sides must be parallel