Parallel and Perpendicular Lines

Front

What are the slopes of parallel lines?

Back

The slopes of parallel lines are identical.

Front

What is the slope that is perpendicular to m = 5/8?

Back

The slope that is perpendicular to m = 5/8 is -8/5.

Front

If a line is perpendicular to y = 2x - 7, what is the slope of this line?

Back

The slope of the line perpendicular to y = 2x - 7 is -1/2.

Front

Are the lines y = 3/2x + 2 and y = 2/3x + 6 parallel, perpendicular, or neither?

Back

These lines are neither parallel nor perpendicular.

Front

Are the lines y = 6x + 2 and y = -6x + 2 parallel, perpendicular, or neither?

Back

These lines are neither parallel nor perpendicular.

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet and have the same slope.

Front

What is the definition of perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

How do you find the slope of a line given two points?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.