Which equation would you use to find out if the two lines in the graph are parallel?

Question

anonymous · Answer

attachment

anonymous · Answer

A: 4-1/-2 -1 = 3-1 / 3-1
B: 4-1/-2 -1= 3-(-1)/3-1

mertsj · Answer

Do you know how to find slope?

anonymous · Answer

C: 4-1/1-(-2) = 3-(-1)/3-(-1)
 and no

mertsj · Answer

Take the two ordered pairs that are given.  subtract the y values.  subtract the x values in the same order as you did the y values.  Put the first answer over the second answer.

anonymous · Answer

D: 1-(-2) / 4-1= 3-1/  3-1

anonymous · Answer

Yes I remember how to do slope now

mertsj · Answer

Put the change in y on the top.

anonymous · Answer

Okay

mertsj · Answer

$$m=\frac{4-1}{1-(-2)}=\frac{3}{3}=1$$

anonymous · Answer

okay well at the end isn't it = 3-(-1)/ 3-(-1)

anonymous · Answer

How can you determine if the given lines are perpendicular

anonymous · Answer

Lolwolf???

anonymous · Answer

Two lines are perpendicular if, for some slope $\frac{a}{b}$ the other has a slope of $-\frac{b}{a}$.