Parallel & Perpendicular Lines Warmup 2

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and will never intersect.

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

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

Back

The slope of a line perpendicular to a line with slope m is -1/m.

Front

What is the slope of the line y = 3x + 1?

Back

The slope is 3.

Front

What is the slope of the line y = -4x + 5?

Back

The slope is -4.

Front

Are the lines y = 2x + 3 and y = 2x - 1 parallel, perpendicular, or neither?

Back

They are parallel.

Front

Are the lines y = 1/2x + 2 and y = -2x + 1 parallel, perpendicular, or neither?

Back

They are perpendicular.

Front

What is the slope of a line that is perpendicular to y = 5x + 2?

Back

The slope is -1/5.

Front

If two lines have slopes of 1/3 and -3, what can we say about them?

Back

They are perpendicular.

Front

What is the slope of a line that is parallel to y = 7x - 4?

Back

The slope is 7.