Question

Which equation would you use to find out if the two lines in the graph are parallel? (posting attch.) @johnweldon1993

Answer 1

Plug the pairs of two points into the slope formula and make them equal to each other.

Answer 2

@iGreen so its A right?

Answer 3

\(\sf m = \dfrac{y_2-y_1}{x_2-x_1}\)

(-2, 1), (1, 4)
x1 y1 x2 y2

(-1, -1), (3, 3)
x1 y1 x2 y2

Answer 4

@iGreen

Answer 5

@pandaluvs ????

Answer 6

HALP ME

Answer 7

Panda, tag me in your question and I can see if I can help

Answer 8

yes @samsteronbroadway

Answer 9

@pandaluvs please stop commenting ;_; im trying to learn this..

Answer 10

@pandaluvs I just replied to your question..don't talk about your question on someone else's post..you can message me.

Answer 11

ok @sammixboo

Answer 12

@samsteronbroadway Lol, he wasn't telling you the answer to your question :P

Answer 13

\(\sf m = \dfrac{y_2-y_1}{x_2-x_1}\)

(-2, 1), (1, 4)
x1 y1 x2 y2

(-1, -1), (3, 3)
x1 y1 x2 y2

Anyhow, can you plug these in?

Answer 14

haha I know but I don't get it xD

Answer 15

Plug the first two points in first.

Answer 16

Ummmm so do i take 1,4 and 3,3 ?

Answer 17

you would use slope formula : slope = (y2 - y1) / (x2 - x1)
then you would use : y = mx + b
you would then compare the slopes and the y intercepts...if the slopes are the same and the y intercepts different, then the lines are parallel

Answer 18

No, you take (-2, 1) and (1, 4).

Answer 19

@texaschic101 Actually we can just find the slopes.

Answer 20

And it's asking for an equation you can use.

Answer 21

okay...im way too confused now..

Answer 22

you can have slopes the same..but if y intercepts are the same, then the lines are the same and not parallel. Well...your probably right because you can obviously see that the lines are not the same....oops