Parallel and Perpendicular Lines Flashcard

Front

What is the slope of a line perpendicular to a line with slope 3?

Back

The slope of a line perpendicular to a line with slope 3 is -1/3.

Front

What is the relationship between the slopes of parallel lines?

Back

The slopes of parallel lines are the same.

Front

What is the relationship between the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Front

Write the equation of a line parallel to y = 2x + 3 that passes through the point (1, 5).

Back

y = 2x + 3.

Front

If a line has a slope of -2, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to it is 1/2.

Front

What is the slope of a line parallel to a line with slope -4?

Back

The slope of a line parallel to it is -4.

Front

Write the equation of a line perpendicular to y = 1/2x + 1 that passes through the point (2, 3).

Back

y = -2x + 7.

Front

If line m has a positive slope, what can be said about the slope of a line parallel to m?

Back

The slope of a line parallel to m is also positive.

Front

What is the slope of a line that is horizontal?

Back

The slope of a horizontal line is 0.

Front

Write the equation of a line that passes through the points (2, 3) and (4, 7).

Back

y = 2x - 1.