Unit 7 FC 7 parallel and perpendicular slope

Front

What is the slope of parallel lines?

Back

Parallel lines have the same slope.

Front

What is the slope of the line represented by the equation y = 2x + 4?

Back

The slope is 2.

Front

What is the slope of a line perpendicular to the line represented by the equation y = 2x + 4?

Back

The slope is -1/2.

Front

If two lines have slopes m = 5 and m = -1/5, what relationship do they have?

Back

They are perpendicular.

Front

If two lines have slopes m = -1/3 and m = -1/3, what relationship do they have?

Back

They are parallel.

Front

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

Back

The product of their slopes is -1.

Front

If a line has a slope of 3, what is the slope of a line parallel to it?

Back

The slope of the parallel line is also 3.

Front

If a line has a slope of 4, what is the slope of a line perpendicular to it?

Back

The slope of the perpendicular line is -1/4.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.