Parallel and Perpendicular Slopes

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and will never intersect.

Tags

CCSS.8.EE.B.5

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Tags

CCSS.8.EE.B.6

Front

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

Back

The slope of a line parallel to it is also 3.

Tags

CCSS.8.EE.B.6

Front

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

Back

The slope of a line perpendicular to it is -1/3.

Tags

CCSS.8.EE.B.6

Front

What is the slope of the line represented by the equation y = 2x + 5?

Back

The slope is 2.

Tags

CCSS.8.EE.B.5

Front

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

Back

The slope is -4.

Tags

CCSS.8.EE.B.5

Front

Identify the slope of the line: y = 1/2x - 3.

Back

The slope is 1/2.

Tags

CCSS.8.EE.B.5

Front

Which of the following lines is parallel to y = 4x + 2? y = 4x - 5, y = -4x + 1, y = 2x + 3.

Back

y = 4x - 5.

Front

Which of the following lines is perpendicular to y = 1/3x + 2? y = 3x - 1, y = -3x + 4, y = 1/3x + 5.

Back

y = -3x + 4.

Front

What is the equation of a line parallel to y = 2x + 1 that passes through the point (1, 3)?

Back

y = 2x + 1.