Parallel and Perpendicular lines

Front

What are perpendicular lines?

Back

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

Front

What is the relationship between the slopes of two perpendicular lines?

Back

The slopes are negative reciprocals of each other.

Front

What are parallel lines?

Back

Lines that never intersect and have the same slope.

Front

What is the relationship between the slopes of two parallel lines?

Back

The slopes are equal.

Front

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

Back

The slope will be -1/m.

Front

What is the slope of the line y = 3/2x + 3?

Back

The slope is 3/2.

Front

Which equation is parallel to y = -7x + 2?

Back

y = -7x - 1.

Front

Which equation is perpendicular to y = -6x + 2?

Back

y = 1/6x + 4.

Front

How do you determine if two lines are parallel?

Back

Check if their slopes are equal.

Front

How do you determine if two lines are perpendicular?

Back

Check if the product of their slopes is -1.