Parallel, Perpendicular, or Neither

Front

What are parallel lines?

Back

Lines that never intersect and have the same slope.

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 'neither' mean in the context of lines?

Back

Lines that are neither parallel nor perpendicular; they intersect at an angle that is not 90 degrees.

Front

If the slope of one line is 2, what is the slope of a line that is perpendicular to it?

Back

-1/2 (the opposite reciprocal of 2).

Front

If two lines have slopes of 3 and -1/3, what can we say about them?

Back

They are perpendicular lines.

Front

What is the slope of a line parallel to y = 5x + 2?

Back

5 (parallel lines have identical slopes).

Front

How do you determine if two lines are parallel?

Back

Check if their slopes are equal.

Front

How do you determine if two lines are perpendicular?

Back

Check if the product of their slopes is -1.

Front

What is the slope of a line perpendicular to y = -2x + 4?

Back

1/2 (the opposite reciprocal of -2).

Front

If two lines have slopes of 4 and 4, what can we say about them?

Back

They are parallel lines.