What is the slope of the line with the equation: $$y = -\frac{3}{5}x + 4$$ ?

The slope is $$-\frac{3}{5}$$ .

Find the slope of a line parallel to the line $$y = \frac{1}{2}x + 4$$ .

The slope of the parallel line is $$\frac{1}{2}$$ .

Find the slope of a line perpendicular to the line $$y = -\frac{3}{2}x + 7$$ .

The slope of the perpendicular line is $$\frac{2}{3}$$ .

What is the slope of a line perpendicular to a line with slope m?

The slope of a perpendicular line is $$-\frac{1}{m}$$ .

If two lines have slopes of $$m_1$$ and $$m_2$$ , when are they parallel?

They are parallel if $$m_1 = m_2$$ .

If two lines have slopes of $$m_1$$ and $$m_2$$ , when are they perpendicular?

They are perpendicular if $$m_1 \cdot m_2 = -1$$ .

What is the slope-intercept form of a line?

The slope-intercept form is $$y = mx + b$$ , where m is the slope and b is the y-intercept.

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

The slope is calculated as $$m = \frac{y_2 - y_1}{x_2 - x_1}$$ .

What does it mean for two lines to be parallel?

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

What does it mean for two lines to be perpendicular?

Two lines are perpendicular if they intersect at a right angle (90 degrees).

If a line has a slope of 0, what does that indicate about the line?

A slope of 0 indicates a horizontal line.

Parallel and Perpendicular Slopes

Flashcard

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Mathematics

•

9th Grade

•

Practice Problem

•

Hard

•

CCSS

8.EE.B.5, 8.EE.B.6, 4.G.A.1

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FLASHCARD QUESTION

Front

Back

Tags

CCSS.8.EE.B.5

FLASHCARD QUESTION

Front

Back

Tags

CCSS.8.EE.B.5

FLASHCARD QUESTION

Front

Back

Tags

CCSS.8.EE.B.5

FLASHCARD QUESTION

Front

Back

These lines are perpendicular.

Tags

CCSS.8.EE.B.6

FLASHCARD QUESTION

Front

Back

These lines are perpendicular.

Tags

CCSS.8.EE.B.6

FLASHCARD QUESTION

Front

What is the definition of slope?

Back

Slope is the measure of the steepness of a line, calculated as the rise over run.

Tags

CCSS.8.EE.B.5

FLASHCARD QUESTION

Front

What is the slope of a line parallel to a line with slope m?

Back

The slope of a parallel line is also m.

Tags

CCSS.8.EE.B.5

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