Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

mathcalculus Group Title

I DON'T UNDERSTAND WHY MY ANSWER IS NOT CORRECT :( SLOPE IS -9/11 AND THE EQUATION IS -9X/11+44 Find the equation of the line parallel to -9x-11y=-2 and passing through the point (5,-1). The equation of the line is ??

  • one year ago
  • one year ago

  • This Question is Closed
  1. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    The slope of -9x-11y=-2 is -9/11 So plug that slope and the given point into point-slope form: \[y-y _{1}=m(x-x _{1})\]

    • one year ago
  2. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i did..

    • one year ago
  3. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @mathcalculus you did your algebra incorrectly, it appears...

    • one year ago
  4. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    can you point it out where?

    • one year ago
  5. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \[y-(-1)=\frac{-9}{11}(x-5)\]

    • one year ago
  6. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Simplify and you will be done.

    • one year ago
  7. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i have this: y=9x/11 +44

    • one year ago
  8. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    your y-intercept value will be a fraction...maybe you didn't multiply the -9/11 when expanding

    • one year ago
  9. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @whpalmer4 i'm not sure where I have made my mistake.

    • one year ago
  10. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \[1+y = \frac{1}{11}(45-9x)\]probably screwed up bringing the 1 across

    • one year ago
  11. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \[y+1=\frac{-9}{11}x+\frac{45}{11}\]

    • one year ago
  12. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    isn't y- (-1) a y+1?

    • one year ago
  13. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so if i bring it to the other side it must be subtracted from the 45

    • one year ago
  14. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    oh yes! got it

    • one year ago
  15. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    damn

    • one year ago
  16. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    9/11 * 5

    • one year ago
  17. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \[y=\frac{-9}{11}x+\frac{45}{11}-1=\frac{-9}{11}x+\frac{34}{11}\]

    • one year ago
  18. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    subtract 11/11 from each side: \[y+1 - 11/11 = \frac{1}{11}{45-11-9x}\]\[y = \frac{1}{11}(34-9x)\]\[y = -\frac{9x}{11}+\frac{34}{11}\]

    • one year ago
  19. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    whoops, used invisible () in that first eq. :-)

    • one year ago
  20. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    that's not the answer..... :(

    • one year ago
  21. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    it keeps saying it's wrong.

    • one year ago
  22. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i think it's the website, it must be correct. thank you everyone.

    • one year ago
  23. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    well, that in fact is the equation of a line parallel to the original line, passing through -5,1 as you can see in this graph:

    • one year ago
    1 Attachment
  24. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Check the rules for entry. Maybe you are entering the fractions incorrectly or maybe you are not supposed to write y = or maybe they want the equation in some other form besides slope-intercept form.

    • one year ago
  25. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    (5,-1) that is

    • one year ago
  26. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, I checked. appreciate the help

    • one year ago
  27. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yup

    • one year ago
  28. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    it must be correct, even the calculator shows it.

    • one year ago
  29. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Maybe you want to try 9x+11y=34

    • one year ago
  30. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I'll sometimes multiply by the denominator of the fraction, do the problem without the pesky fractions and accompanying mistakes, then divide again by the former denominator for the final answer.

    • one year ago
  31. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I'd say you know what you're doing, in any case...watch for those fraction mistakes :-)

    • one year ago
  32. mathcalculus Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks alot ! :)

    • one year ago
  33. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yw

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.