Parallel and Perpendicular Slopes

Front

What are parallel lines in terms of slope?

Back

Parallel lines have the same slope.

Front

What are perpendicular lines in terms of slope?

Back

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

Front

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

Back

The slope of the perpendicular line is -1/3.

Front

What is the slope of the line represented by the equation y = 4x + 1?

Back

The slope is 4.

Front

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

Back

m1 must equal m2.

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 that is parallel to the line y = -2x + 5?

Back

The slope is -2.

Front

Determine if the lines y = 5x + 1 and y = 5x - 3 are parallel, perpendicular, or neither.

Back

They are parallel.

Front

What is the slope of a line that is perpendicular to the line y = 1/4x + 2?

Back

The slope is -4.

Front

If the slopes of two lines are both -1/3, what can be said about the lines?

Back

The lines are parallel.