Parallel, Perpendicular, neither practice

Front

What are parallel lines?

Back

Lines that have the same slope and never intersect.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees) and have slopes that are opposite reciprocals.

Front

What does it mean for two lines to be neither parallel nor perpendicular?

Back

They intersect at an angle that is not 90 degrees and do not have the same slope.

Front

If the slope of one line is m, what is the slope of a line parallel to it?

Back

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

Front

If the slope of one line is m, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to it is -1/m (the opposite reciprocal).

Front

What is the slope of the line represented by the equation y = 2x + 5?

Back

The slope is 2.

Front

What is the slope of the line represented by the equation y = -3x + 1?

Back

The slope is -3.

Front

Determine if the lines y = 4x + 1 and y = 4x - 2 are parallel, perpendicular, or neither.

Back

They are parallel because they have the same slope (4).

Front

Determine if the lines y = 1/2x + 3 and y = -2x + 1 are parallel, perpendicular, or neither.

Back

They are perpendicular because the slopes (1/2 and -2) are opposite reciprocals.

Front

What is the slope of a line that is perpendicular to a line with a slope of 1/4?

Back

The slope is -4.