Parallel and Perpendicular lines

Front

What are parallel lines?

Back

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

Front

What is the slope of parallel lines?

Back

The slopes of parallel lines are the same.

Front

What are perpendicular lines?

Back

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

Front

What is the slope of perpendicular lines?

Back

The slopes of perpendicular lines are negative reciprocals of each other.

Front

How do you find the equation of a line parallel to a given line?

Back

To find the equation of a line parallel to a given line, use the same slope as the given line and the point through which the new line passes.

Front

What is the slope-intercept form of a line?

Back

Front

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

Back

Front

Back

Front

What does it mean for two lines to have slopes that are negative reciprocals?

Back

Front

Back