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ineedyouubiebs Group Title

Write an equation for a line parallel to 12+8x=-3y and passing through (3,-5)

  • one year ago
  • one year ago

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  1. mathstudent55 Group Title
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    Ready?

    • one year ago
  2. ineedyouubiebs Group Title
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    Yes:)

    • one year ago
  3. mathstudent55 Group Title
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    This is the same idea. You need a line parallel to a given line. Parallel lines have the same slope. So the first job is to find the slope of the given line. To do that, you solve the equation for y. First, switch sides. -3y = ...

    • one year ago
  4. ineedyouubiebs Group Title
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    -3y=8x+12

    • one year ago
  5. mathstudent55 Group Title
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    Good. Second job, what is happening to y?

    • one year ago
  6. ineedyouubiebs Group Title
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    umm will be dividing -3y to 8x and 12??

    • one year ago
  7. mathstudent55 Group Title
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    Yes, you divide every term on both sides by -3 to undo the y being multiplied by -3.

    • one year ago
  8. ineedyouubiebs Group Title
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    That will end up being y=-8/3-4 ?

    • one year ago
  9. mathstudent55 Group Title
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    remember the x on the right side. |dw:1359264332902:dw|

    • one year ago
  10. mathstudent55 Group Title
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    |dw:1359264433972:dw|

    • one year ago
  11. ineedyouubiebs Group Title
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    YAY! I was correct so then I will need to plug in (3,-5) right?

    • one year ago
  12. mathstudent55 Group Title
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    Now you know the slope you need is m = ?

    • one year ago
  13. ineedyouubiebs Group Title
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    m=-8/3

    • one year ago
  14. mathstudent55 Group Title
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    Great. Now the new equation is going to have m = -8/3, and point (3, -5) If you plug in -8/3 for m and 3 for x and -5 for y into y = mx + b, you can solve for b.

    • one year ago
  15. ineedyouubiebs Group Title
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    b will equal to 3(:

    • one year ago
  16. mathstudent55 Group Title
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    |dw:1359264870692:dw|

    • one year ago
  17. mathstudent55 Group Title
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    Since you now know m and b, what is the equation of the new line?

    • one year ago
  18. ineedyouubiebs Group Title
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    ~le dances~ The equation will be y=-8/3+3 =D

    • one year ago
  19. mathstudent55 Group Title
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    That is it! Great work again!

    • one year ago
  20. ineedyouubiebs Group Title
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    THANK YOU SO MUCH FOR YOUR GREAT TUTORING! YOUR AMAZING=D=D

    • one year ago
  21. mathstudent55 Group Title
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    Thanks. You're not so bad yourself. :-)

    • one year ago
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