## AmberCat21 Group Title If 2x-2y=6 is parallel to 9y=bx +12, what is b? one year ago one year ago

1. GCR92 Group Title

Think about it, what do 2 straight lines need to be pararell?

2. AmberCat21 Group Title

it's that they don't intersect?

3. GCR92 Group Title

Yes, they never intersect, and what does it matematically mean?

4. GCR92 Group Title

they have something in common..

5. GCR92 Group Title

remember, the slope!

6. GCR92 Group Title

They have the same slope.

7. AmberCat21 Group Title

Pls. explain...

8. GCR92 Group Title

ok

9. GCR92 Group Title

You have the equation of a line, which is usually given in the general form Ax+By+c=0

10. hba Group Title

$Slope=m=\frac{ -coefficient \ of \ x }{ coefficient \ of \ y }$

11. GCR92 Group Title

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

12. GCR92 Group Title

and so, to calculate the slope DIRECTLY just by seeing the equation, we have a trick

13. GCR92 Group Title

IF they give you the equation in the general form, Ax+By+c = 0, the slope is -A/B

14. GCR92 Group Title

Now, if you have it in the explicit form, y=mx+n, what would be the slope in there? try it

15. hba Group Title

@AmberCat21 Do you even get a word.

16. GCR92 Group Title

Tic Tac Tic Tac

17. hba Group Title

@GCR92 Always try to simplify it dude. We need to make it look as simpler as possible :P

18. GCR92 Group Title

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

19. GCR92 Group Title

Amber you still alive?

20. hba Group Title

Well amber left :P

21. GCR92 Group Title

should we answer or wait for him to come back @hba

22. hba Group Title

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 :)

23. GCR92 Group Title

@hba got it, thanks, let just see if he comes back.

24. hba Group Title

@GCR92 Hmm :)