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AmberCat21

  • 2 years ago

If 2x-2y=6 is parallel to 9y=bx +12, what is b?

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  1. GCR92
    • 2 years ago
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    Think about it, what do 2 straight lines need to be pararell?

  2. AmberCat21
    • 2 years ago
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    it's that they don't intersect?

  3. GCR92
    • 2 years ago
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    Yes, they never intersect, and what does it matematically mean?

  4. GCR92
    • 2 years ago
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    they have something in common..

  5. GCR92
    • 2 years ago
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    remember, the slope!

  6. GCR92
    • 2 years ago
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    They have the same slope.

  7. AmberCat21
    • 2 years ago
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    Pls. explain...

  8. GCR92
    • 2 years ago
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    ok

  9. GCR92
    • 2 years ago
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    You have the equation of a line, which is usually given in the general form Ax+By+c=0

  10. hba
    • 2 years ago
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    \[Slope=m=\frac{ -coefficient \ of \ x }{ coefficient \ of \ y }\]

  11. GCR92
    • 2 years ago
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    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
    • 2 years ago
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    and so, to calculate the slope DIRECTLY just by seeing the equation, we have a trick

  13. GCR92
    • 2 years ago
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    IF they give you the equation in the general form, Ax+By+c = 0, the slope is -A/B

  14. GCR92
    • 2 years ago
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    Now, if you have it in the explicit form, y=mx+n, what would be the slope in there? try it

  15. hba
    • 2 years ago
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    @AmberCat21 Do you even get a word.

  16. GCR92
    • 2 years ago
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    Tic Tac Tic Tac

  17. hba
    • 2 years ago
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    @GCR92 Always try to simplify it dude. We need to make it look as simpler as possible :P

  18. GCR92
    • 2 years ago
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    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
    • 2 years ago
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    Amber you still alive?

  20. hba
    • 2 years ago
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    Well amber left :P

  21. GCR92
    • 2 years ago
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    should we answer or wait for him to come back @hba

  22. hba
    • 2 years ago
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    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
    • 2 years ago
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    @hba got it, thanks, let just see if he comes back.

  24. hba
    • 2 years ago
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    @GCR92 Hmm :)

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