Parallel and Perpendicular Slopes

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet and have the same slope.

Tags

CCSS.HSG.CO.A.1

Front

What is the definition of perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees) and have slopes that are negative reciprocals of each other.

Tags

CCSS.HSG.CO.A.1

Front

If two lines have slopes m1 and m2, when are they parallel?

Back

Two lines are parallel if m1 = m2.

Tags

CCSS.8.EE.B.6

Front

If two lines have slopes m1 and m2, when are they perpendicular?

Back

Two lines are perpendicular if m1 * m2 = -1.

Tags

CCSS.8.EE.B.6

Front

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

Back

The slope is 3.

Tags

CCSS.8.EE.B.5

Front

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

Back

The slope is 1/4.

Tags

CCSS.8.EE.B.6

Front

Find the slope of a line parallel to y = 1/2x - 3.

Back

The slope is 1/2.

Tags

CCSS.8.EE.B.5

Front

Find the slope of a line perpendicular to y = 5x + 2.

Back

The slope is -1/5.

Tags

CCSS.8.EE.B.5

Front

What is the slope of the line represented by the equation y = -2x + 4?

Back

The slope is -2.

Tags

CCSS.8.EE.B.5

Front

If Line A has a slope of 2, what is the slope of a line parallel to it?

Back

The slope of the parallel line is also 2.

Tags

CCSS.8.EE.B.5