Parallel and Perpendicular Lines

Front

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

Back

-1/2

Front

What can be said about the slopes of parallel lines?

Back

The slopes of parallel lines are the same.

Front

If line a passes through (0, 3) and (-4, 8) and line b passes through (0, 5) and (5, 9), what can be said about lines a and b?

Back

Lines a and b are perpendicular.

Front

What can be concluded about the lines y = 5/7x + 2 and y = 5/7x - 30?

Back

These lines are parallel.

Front

What can be concluded about the lines y = -2/3x + 2 and y = 3/2x + 9?

Back

These lines are perpendicular.

Front

Define parallel lines in terms of their slopes.

Back

Parallel lines have the same slope.

Front

Define perpendicular lines in terms of their slopes.

Back

Perpendicular lines have slopes that are negative reciprocals of each other.

Front

What is the negative reciprocal of 3?

Back

-1/3

Front

If the slope of a line is 4, what is the slope of a line perpendicular to it?

Back

-1/4

Front

What is the slope of the line represented by the equation y = -5x + 3?

Back

-5