Equations of Parallel and Perpendicular Lines

Front

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

Back

-1/3

Front

Write the equation of a line that passes through the point (2, 3) and is parallel to the line y = 4x + 1.

Back

y = 4x - 5

Front

What is the definition of parallel lines?

Back

Lines that have the same slope and never intersect.

Front

What is the definition of perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

If two lines have slopes m1 and m2, when are they perpendicular?

Back

When m1 * m2 = -1.

Front

Write the equation of a line that passes through the point (0, 0) and has a slope of -2.

Back

y = -2x.

Front

Are the lines y = 2x + 3 and y = 2x - 5 parallel, perpendicular, or neither?

Back

Parallel.

Front

What is the slope of the line y = -3x + 4?

Back

-3.

Front

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

Back

y = -2x + 3.

Front

If a line has a slope of 0, what type of line is it?

Back

A horizontal line.