Parallel & Perpendicular Slope

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart. They have equal slopes.

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). The slopes of perpendicular lines are negative reciprocals of each other.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

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

Back

The slope of a line parallel to it is also 2.

Tags

CCSS.8.EE.B.5

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 a horizontal line?

Back

The slope of a horizontal line is 0.

Tags

CCSS.8.EE.B.5

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Tags

CCSS.8.EE.B.5

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated using the formula: m = (y2 - y1) / (x2 - x1).

Tags

CCSS.8.EE.B.5

Front

What is the slope of a line that rises 4 units and runs 2 units?

Back

The slope is 4/2, which simplifies to 2.

Tags

CCSS.8.EE.B.5

Front

What is the relationship between the slopes of two parallel lines?

Back

The slopes of two parallel lines are equal.

Tags

CCSS.8.EE.B.6

Front

What is the relationship between the slopes of two perpendicular lines?

Back

The slopes of two perpendicular lines are negative reciprocals of each other.

Tags

CCSS.8.EE.B.6