anonymous
  • anonymous
If 2x-2y=6 is parallel to 9y=bx +12, what is b?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Think about it, what do 2 straight lines need to be pararell?
anonymous
  • anonymous
it's that they don't intersect?
anonymous
  • anonymous
Yes, they never intersect, and what does it matematically mean?

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anonymous
  • anonymous
they have something in common..
anonymous
  • anonymous
remember, the slope!
anonymous
  • anonymous
They have the same slope.
anonymous
  • anonymous
Pls. explain...
anonymous
  • anonymous
ok
anonymous
  • anonymous
You have the equation of a line, which is usually given in the general form Ax+By+c=0
hba
  • hba
\[Slope=m=\frac{ -coefficient \ of \ x }{ coefficient \ of \ y }\]
anonymous
  • anonymous
in your case, you have it put in a different way, with the y solved, that's what we call the explicit form of the equation of the line
anonymous
  • anonymous
and so, to calculate the slope DIRECTLY just by seeing the equation, we have a trick
anonymous
  • anonymous
IF they give you the equation in the general form, Ax+By+c = 0, the slope is -A/B
anonymous
  • anonymous
Now, if you have it in the explicit form, y=mx+n, what would be the slope in there? try it
hba
  • hba
@AmberCat21 Do you even get a word.
anonymous
  • anonymous
Tic Tac Tic Tac
hba
  • hba
@GCR92 Always try to simplify it dude. We need to make it look as simpler as possible :P
anonymous
  • anonymous
Thanks, I know what you mean, but the ammount of concepts that one needs to DOMINATE to really know math is so big that sometimes i just can't explain something in 2 words
anonymous
  • anonymous
Amber you still alive?
hba
  • hba
Well amber left :P
anonymous
  • anonymous
should we answer or wait for him to come back @hba
hba
  • hba
Well,giving direct answers or providing the whole solution is not allowed on OS @GCR92 We do not want the answerers to do all the work,we would like the asker to participate in the solution though :)
anonymous
  • anonymous
@hba got it, thanks, let just see if he comes back.
hba
  • hba
@GCR92 Hmm :)

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