Parallel and Perpendicular Lines

Front

What is the slope of a line perpendicular to a line with a slope of 5/8?

Back

-8/5

Front

What are the slopes of parallel lines?

Back

Identical

Front

Write the equation of a line perpendicular to y = 3x - 8 that passes through the point (-3, -9).

Back

y + 9 = -1/3(x + 3)

Front

Determine if the lines with points (15, 20), (17, 18) and (-22, -18), (-20, -16) are parallel, perpendicular, or neither.

Back

Perpendicular

Front

What is the relationship between the slopes of two perpendicular lines?

Back

The slopes are opposite reciprocals.

Front

What is the slope of a line that is parallel to a line with a slope of -2?

Back

-2

Front

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

Back

-1/3

Front

Write the equation of a line passing through (-4, 5) that is perpendicular to the line y = -1/2x + 5/2.

Back

y = 2x + 13

Front

What is the slope of a line that is parallel to a line with a slope of 4/5?

Back

4/5

Front

If two lines are perpendicular, what can be said about their slopes?

Back

Their product is -1.