Slopes of Parallel and Perpendicular Lines

Front

Slopes of perpendicular lines are...

Back

opposite reciprocals.

Front

What slope is perpendicular to: m = -3?

Back

1/3.

Front

Slopes of parallel lines are...

Back

the same.

Front

What slope is parallel to: m = 3/4?

Back

3/4.

Front

y = 6x + 2 and y = -6x + 2
These lines are...

Back

Neither.

Front

If the slope of line A is 2, what is the slope of a line perpendicular to it?

Back

-1/2.

Front

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

Back

-5.

Front

The slope of a line is defined as...

Back

the ratio of the rise over the run.

Front

If two lines have slopes m1 and m2, and m1 * m2 = -1, then the lines are...

Back

perpendicular.

Front

If two lines have the same slope, they are...

Back

parallel.