Question

are the two lines parallel x+3y=-4,3x+9y=8

Answer 1

parallel lines must have the same slope

Answer 2

you can divide the second equation by three to compare them

Answer 3

So they are not parrallel

Answer 4

I am solving it now and see

Answer 5

one of them has 3y and the other has 9y

yes

Answer 6

you can't compare them directly

Answer 7

Oh I solved it they are not parallel

Answer 8

Divide the second equation by 3

Answer 9

are you sure ?

Answer 10

There are Parallel

Answer 11

Yes I am sure accordint to my working ,You too can do the work and see the final answer ,they are not parallel

Answer 12

@ Yahoo How did you think they are parallel because I go against it do let me know

Answer 13

x+3y=-4, 3x+9y=8

first one:
x+3y=-4
3y = -4 -x
y = -4/3 -1/3x

second one:
3x+9y=8
9y = 8-3x
y = 8/9 - 3/9x
y=8/9 -1/3 x

Answer 14

yes they are parallel becoz both have slope=-1/3

Answer 15

Well parallel lines have the same gradient(slope) get those in the form y=mx+c
where m is the gradient and check it wether both the gradients are equal if they are they are parallel

Answer 16

I am checking it on now in order to agree with you guys that they are parallel

Answer 17

they are parallel

x + 3y = -4
3y = -x - 4
y = -1/3x -4/3 <-- slope of -1/3

3x + 9y = 8
9y = -3x + 8
y = -3/9x + 8
y = -1/3x + 8 <-- slope -1/3

Answer 18

I agree with you guys