Equations of Parallel and Perpendicular Lines QUICK

Front

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

Back

The slope (m) represents the steepness of the line.

Front

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

Back

Their slopes are the same.

Front

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

Back

Their slopes are negative reciprocals of each other.

Front

What is the slope of the line perpendicular to y = 3x + 2?

Back

The slope is -1/3.

Front

Are the lines y = 2x + 1 and y = 2x - 3 parallel?

Back

YES

Front

Are the lines y = -1/4x + 5 and y = 4x - 2 perpendicular?

Back

YES

Front

What is the slope of the line y = -5x + 7?

Back

The slope is -5.

Front

What is the slope of the line perpendicular to y = -2x + 3?

Back

The slope is 1/2.

Front

If the slope of one line is 3, what is the slope of a line parallel to it?

Back

The slope is also 3.

Front

If the slope of one line is -1/2, what is the slope of a line perpendicular to it?

Back

The slope is 2.