Parallel/Perpendicular Lines and Slope

Parallel/Perpendicular Lines and Slope

10/1 - 10/2

Multiple Choice

What is the slope formula?

Multiple Choice

What is the slope of the line that passes through the points (-4, -1) and (-2, -5)?

• 1/2

• -1/2

• 2

• -2

Multiple Choice

Find the slope:
(-3, 3) and (7, 6)

• 3/4
• -4/3
• 3/10
• -10/3

Multiple Choice

What is the negative reciprocal of 1/4?

• 4
• -4/-1
• -4
• 4/1

Multiple Choice

What is the negative reciprocal of -2/7?

• 2/7
• 7/-2
• 7/2
• -7/2

Multiple Choice

What is the negative reciprocal of 1/-3?

• 3/1
• 3/-1
• -3/1
• -3

Multiple Choice

What is the negative reciprocal of 8/9?

• 9/8
• -9/9
• -9/8
• -8

Multiple Choice

What is the slope of Line AB?

 $A\ \left(-2,\ 3\right)$   $B\ \left(2,6\right)$  

•  $\frac{3}{4}$  

•  $\frac{4}{3}$  

•  $0$  

•  $-\frac{3}{2}$  

Multiple Choice

 $C:\ \left(-1,0\right)\ D:\ \left(3,3\right)$  

What is the slope of CD?

•  $\frac{4}{3}$  

•  $\frac{2}{3}$  

•  $\frac{3}{4}$  

•  $\frac{3}{2}$  

Multiple Choice

Using the slopes of AB and CD, would the 2 lines be parallel, perpendicular, or neither?

• parallel

• perpendicular

• neither

Fill in the Blank

 $A:\ \left(0,\ 2\right)\ B:\ \left(5,4\right)$  

What is the slope of AB? (use the slash symbol under the ? mark to show division or a fraction

Multiple Choice

 $C:\ \left(1,\ 8\right)\ D:\ \left(3,3\right)$  

What is the slope of CD?

•  $\frac{5}{2}$  

•  $-\frac{5}{2}$  

•  $-\frac{2}{5}$  

•  $\frac{2}{5}$  

Multiple Select

Using the slopes of AB and CD, the two lines would be:

• parallel

• perpendicular

• neither

Multiple Choice

Are the lines Perpendicular? How do you know?

Line 1 runs through the point (0, -1) and (7, 1)

Line 2 runs through the point (-1, 4) and (2, -5)

• Yes, their slopes are negative reciprocals

• No, their slopes are not negative reciprocals

• Yes, their slope are the same

• No, their slopes are not the same

Multiple Choice

Are the Lines Parallel? How do you know?

Line 1 runs through the points (-6, 6) and (0, 5)

Line 2 runs through the points (0, -3) and (6, -4)

• Yes, their slopes are opposite reciprocals

• Yes, their slopes are the same

• No, their slopes are opposite reciprocals

• No, their slope are the same

Multiple Choice

Slopes of Perpendicular lines are __________?

• Negative

• Reciprocals

• Negative Reciprocals

• Equal

Multiple Choice

Slopes of Parallel lines are ____________?

• negative

• reciprocals

• equal

• negative reciprocals

Multiple Choice

What slope is perpendicular to:  
m = 3

• -3
• -1/3
• 1/3
• 3

Multiple Choice

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

Multiple Choice

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

Multiple Choice

Find the slope of the line that goes through the points (-8,6) and (7,-3).

• 1/3
• -1/3
• -3/5
• -5/3

Multiple Choice

 $A\left(-1,8\right),\ B\ \left(2,6\right),\ C\ \left(-1,2\right),\ D\ \left(3,3\right)$  

Using point A, B, C, and D, determine the relationship of line AB to line CD.

• parallel

• perpendicular

• neither