Parallel and Perpendicular Lines

Front

What are parallel lines?

Back

Lines that have the same slope and never intersect.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees) and have slopes that are opposite reciprocals.

Front

If two lines have the same slope, what can we say about them?

Back

They are parallel.

Front

What is the slope of a line in the equation y = mx + b?

Back

The slope is represented by 'm'.

Front

What is the slope of the line y = 4x + 3?

Back

4

Front

What is the slope of a line that is perpendicular to a line with a slope of 5/8?

Back

-8/5

Front

If two lines are perpendicular, what is true about their slopes?

Back

Their slopes are opposite reciprocals.

Front

What is the slope of the line y = 3x - 3?

Back

3

Front

If two lines are parallel, what can we say about their slopes?

Back

Their slopes are identical.

Front

What is the relationship between the slopes of parallel lines?

Back

They are equal.