Parallel and Perpendicular Lines

Front

Slopes of parallel lines are...

Back

identical.

Front

Are the lines shown parallel, perpendicular, or neither?

Back

Perpendicular.

Front

Slopes of perpendicular lines are...

Back

opposite reciprocals.

Front

What slope is parallel to: m = 4?

Back

4.

Front

y = -2/3x + 2 and y = 3/2x + 9
These lines are...

Back

Perpendicular.

Front

Definition of parallel lines:

Back

Lines in a plane that never meet and have the same slope.

Front

Definition of perpendicular lines:

Back

Lines that intersect at a right angle (90 degrees).

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.

Front

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

Back

5.