Parallel and Perpendicular Lines

Front

Parallel lines have __________ slopes

Back

Equal

Front

If two lines are parallel, their slopes are ____________

Back

the same.

Front

What slope is parallel to: m = 4?

Back

4

Front

What is the slope of a line perpendicular to -10/3?

Back

3/10

Front

The slopes of perpendicular lines are ____________

Back

negative reciprocals of each other.

Front

What is the slope of a line perpendicular to a slope of 2?

Back

-1/2

Front

If two lines have slopes of 1/3 and -3, are they parallel, perpendicular, or neither?

Back

Perpendicular

Front

What is the slope of a line parallel to a slope of -5?

Back

-5

Front

If a line has a slope of 0, what type of line is it?

Back

Horizontal

Front

If a line has an undefined slope, what type of line is it?

Back

Vertical