Parallel and Perpendicular Lines

Front

What is the slope of a line parallel to a line with slope m = 3/4?

Back

The slope of a line parallel to this line is also 3/4.

Front

What slope does a line have if it is parallel to the line represented by the equation y = 2x - 7?

Back

The slope of the parallel line is 2.

Front

If a line has a slope of 4/7, what is the slope of a line that is perpendicular to it?

Back

The slope of the perpendicular line is -7/4.

Front

What is the slope of a line that is perpendicular to a line with slope -6/5?

Back

The slope of the perpendicular line is 5/6.

Front

If a line has a slope of -5/6, what is the slope of a line that is parallel to it?

Back

The slope of the parallel line is -5/6.

Front

Define parallel lines in terms of slope.

Back

Parallel lines have the same slope but different y-intercepts.

Front

Define perpendicular lines in terms of slope.

Back

Perpendicular lines have slopes that are negative reciprocals of each other.

Front

What is the negative reciprocal of 3/4?

Back

The negative reciprocal of 3/4 is -4/3.

Front

What is the negative reciprocal of -5/6?

Back

The negative reciprocal of -5/6 is 6/5.

Front

If two lines have slopes of 2 and -1/2, are they parallel, perpendicular, or neither?

Back

They are perpendicular because their slopes are negative reciprocals.