Parallel and Perpendicular Lines

Front

What is the slope of a line parallel to y = 5x + 7?

Back

The slope is 5.

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

What do two parallel lines have in common?

Back

They have the same slope.

Front

What is the slope of a line perpendicular to a line with a slope of 3?

Back

The slope is -1/3.

Front

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

Back

The slopes are opposite reciprocals.

Front

If two lines have slopes of 6 and -1/6, what is their relationship?

Back

They are perpendicular.

Front

What is the equation of a line that is parallel to y = 5x - 3 and passes through (0, 4)?

Back

y = 5x + 4.

Front

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

Back

y = -1/2x + b (where b is any y-intercept).

Front

If two lines are neither parallel nor perpendicular, what can be said about their slopes?

Back

Their slopes are neither the same nor opposite reciprocals.

Front

What is the slope of the line y = -6x + 2?

Back

The slope is -6.