(3.5) Flashcard

Front

What is the slope of parallel lines?

Back

The slopes of parallel lines are the same.

Front

What is the slope of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Front

If a line has a slope of m = 5/8, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to m = 5/8 is -8/5.

Front

Write the equation of a line parallel to y = 4x - 9 that passes through the point (-2, 4).

Back

y = 4x + 12.

Front

Which line is perpendicular to y = 3/2x + 6 and goes through the point (-3, 4)?

Back

y = -2/3x + 2.

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and 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 2, what is the slope of a line that is parallel to it?

Back

The slope of a line parallel to it is also 2.

Front

If the slope of a line is -3, what is the slope of a line that is perpendicular to it?

Back

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

Front

What is the general form of the equation of a line?

Back

The general form is y = mx + b, where m is the slope and b is the y-intercept.