Lesson 5.8 Slopes of Parallel & Perpendicular Lines

Find the slope of:

(7,1) and (-2,1)

Find the slope of:

(1,8) and (3,12)

y = 5/7x +2

y = 5/7x - 30

Are these lines parallel?

Are these two lines parallel?

y = -1/3x - 5

y = 1/3x + 2

What is the slope of a line perpendicular to 5?

The following represents slopes of two lines. Which answer choice describes the two lines?

m = 7 and m = -7

Line 1: $\left(-1,\ 2\right),\ \left(2,\ 3\right)$  
Line 2:  $\left(0,\ 0\right),\ \left(3,\ 1\right)$  
These two lines are ______________________

The following represents slopes of two lines. Which answer choice describes the two lines?
 $m=-\frac{1}{3}$  and  $m=-\frac{1}{3}$  .

Use the equations given to determine if the following lines are parallel, perpendicular, neither or both.

y=4x-2

y-3=-1/4(x-8)