Gen IM1 -- 2-4 Parallel & Perp Slopes

Front

What are the slopes of perpendicular lines?

Back

Opposite Reciprocals

Front

What are the slopes of parallel lines?

Back

Equal

Front

What slope is perpendicular to m = 3?

Back

-1/3

Front

What slope is parallel to m = 3/4?

Back

3/4

Front

What slope is perpendicular to m = 5/8?

Back

-8/5

Front

If the slope of a line is m, what is the slope of a line perpendicular to it?

Back

-1/m (the opposite reciprocal of m)

Front

If two lines have the same slope, what can be said about their relationship?

Back

They are parallel.

Front

What is the slope of a line that is horizontal?

Back

0 (zero)

Front

What is the slope of a line that is vertical?

Back

Undefined

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)