Parallel and Perpendicular Lines

Front

What are the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Front

What is the equation of a line parallel to y = 5x + 7 with a y-intercept at (0, -2)?

Back

y = 5x - 2

Front

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

Back

Neither

Front

What slope is parallel to m = 4?

Back

4

Front

Which equation has a graph PARALLEL to y = 4x + 7 and a y-intercept of -2?

Back

y = 4x - 2

Front

Define parallel lines in terms of slope.

Back

Parallel lines have identical slopes.

Front

Define perpendicular lines in terms of slope.

Back

Perpendicular lines have slopes that are opposite reciprocals.

Front

If two lines have slopes m1 and m2, what condition must be met for them to be perpendicular?

Back

m1 * m2 = -1.

Front

What is the slope of a line parallel to y = -3x + 5?

Back

-3

Front

What is the slope of a line perpendicular to y = 2x + 1?

Back

-1/2