Question

Are lines and AB and CD parallel, perpendicular, or neither? A(-1,-4) B(2,11) C(1,1) D(4,10)

Answer 1

@jollysailorbold

Answer 2

here's a graph: http://mathway.com/answer.aspx?p=grap?p=(-1,-4)_(2,11)_(1,1)_(4,10)?p=False?p=False?p=True?p=False?p=True?p=-15?p=15?p=-15?p=15

Answer 3

I would say neither. @jollysailorbold

Answer 4

do you want equations for it? or no?

Answer 5

No. I had parallel first, then thought it was neither....idk ohwell lol

Answer 6

haha, okay it's up to you.

Answer 7

You have no clue what it is? what i should lean to

Answer 8

they definately cross, but not at a 90 degree angle

Answer 9

Perpendicular then!,,lol

Answer 10

NOT at a 90 degree angle :)

Answer 11

if the lines are perpendicular to each other, then the product of their slopes is -1

m1 * m2 = -1

Answer 12

the slope of AB is 5, and the slope of CD is 9

Answer 13

So whats that tell me?

Answer 14

5 * 9 doesn't equal -1. so it's not perpendicular, or parellel.

Answer 15

That makes much more sense now then! thats why i was stuck lol!

Answer 16

:) glad i could help. haha

Answer 17

Lol yeah totally! Can you help with a few more or no?

Answer 18

um sure:)

Answer 19

Okay:) having trouble uploading this picture lol

Answer 20

just put in a link

Answer 21

What you mean?

Answer 22

you do online schooling yes? click on the picture you want, and just drag it to another tab, it should work:)

Answer 23

Solve for x.

Answer 24

okay, so those are vertical angles, which mean that they are opposite from each other, and which also means that they equal the same amount.
so 169 = 3x
169/3 = x
which is 56 and 1/3

so x = 56 1/3 :)

hope i helped

Answer 25

Yeah makes sense.. but the answer just doesn't look right becuase thats what i had too! lol

Answer 26

do you need it in a decimal form?

56 1/3 is the same as 56.3333333333333(repeating)

Answer 27

Just doesn't look right for some reason..lol

Answer 28

WAit! yeah your right.. nevermind:)

Answer 29

solve for x.

Answer 30

This ones confusing me.