Parallel and Perpendicular Lines

Front

What is the slope of a line parallel to y = 2x - 7?

Back

2

Front

What slope is perpendicular to m = 5/8?

Back

-8/5

Front

What slope is parallel to m = 4?

Back

4

Front

Are the lines y = -2/3x + 2 and y = 3/2x + 9 parallel, perpendicular, or neither?

Back

Perpendicular

Front

Are the lines y = 6x + 2 and y = -6x + 2 parallel, perpendicular, or neither?

Back

Neither

Front

Define parallel lines.

Back

Lines that never intersect and have the same slope.

Front

Define perpendicular lines.

Back

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

Front

What is the slope of a line in the equation y = mx + b?

Back

m represents the slope of the line.

Front

If two lines have the same slope, what can we say about them?

Back

They are parallel.

Front

If the slope of one line is m and the slope of another line is -1/m, what is the relationship between the two lines?

Back

They are perpendicular.