Parallel Perpendicular Lines Slope

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.

Perpendicular lines intersect at a 

• 45 degree angle.

• 60 degree angle

• 90 degree angle

• 120 degree angle

Which of the following equations represent a line parallel to the line represented by the given equation.

• y = ⅓x + 4

• y = -3x - 11

• y = 3x + 8

• y = -⅓x + 7

Identify the slope of a line parallel to the one graphed.

• -7/3

• 3/7

• -3/7

• 7/3

• 2

• -2

Slopes of parallel lines are 

• Similar

• Opposites

• Reciprocals

• Same

Parallel lines

• intersect at some point.

• never intersect.

• intersect only once.

• intersect twice.

Line C is parallel to Line B.  If the slope of line B is ⅖, what is the slope of line C?

• There is not enough information to answer this question.

• 2½

• ⅖

• -⅖

Slopes of perpendicular lines are 

• same

• similar

• opposites

• opposite reciprocal

Lines K and L are perpendicular.  The slope of line K is -2.  What is the slope of line L?

• ½

• -½

• 2

• -2