Parallel and Perpendicular Lines

Front

What is the slope of a line parallel to y = -3x + 5?

Back

The slope is -3.

Front

What is the slope of a line perpendicular to y = 2x - 4?

Back

The slope is -1/2.

Front

Define parallel lines.

Back

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

Front

Define perpendicular lines.

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees) and have slopes that are negative reciprocals.

Front

Which equation is parallel to y = 4x + 1?

Back

y = 4x - 3.

Front

Which equation is perpendicular to y = -1/2x + 2?

Back

y = 2x + 1.

Front

If two lines have slopes of 3 and -1/3, what is their relationship?

Back

They are perpendicular.

Front

If two lines have slopes of 5 and 5, what is their relationship?

Back

They are parallel.

Front

What is the relationship between the slopes of two lines that are neither parallel nor perpendicular?

Back

Their slopes are neither equal nor negative reciprocals.

Front

Identify the slope of the line represented by the equation y = 7x + 2.

Back

The slope is 7.