Parallel and Perpendicular Lines

Front

Slopes of parallel lines are...

Back

identical.

Front

Slopes of perpendicular lines are...

Back

opposite reciprocals.

Front

Are the two linear equations parallel, perpendicular, or neither?

Back

Perpendicular.

Front

What slope is perpendicular to: m = 3?

Back

-1/3.

Front

Are the two linear equations parallel, perpendicular, or neither?

Back

Perpendicular.

Front

Definition of parallel lines in geometry.

Back

Lines that never intersect and have the same slope.

Front

Definition of perpendicular lines in geometry.

Back

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

Front

If the slope of one line 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 the line with the equation y = 4x + 1?

Back

4.

Front

How do you determine if two lines are parallel using their equations?

Back

Check if their slopes are identical.