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

ineedyouubiebs Group Title

Write an equation for a line parallel to x+15=-5y passing through (0,4)

  • one year ago
  • one year ago

  • This Question is Closed
  1. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Parallel lines have the same slope, First, you need to find the slope of the given line, then use that slope for the new line. To find the slope of the given line, solve x + 15 = -5y for y. Then put it in slope-intercept form, which is y = mx + b. m is the slope. Second, the equation of a line with slope m that passes through point (x1, y1) is y - y1 = m(x - x1) Try it, and ask for help if you need it.

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

    Thanks,I need help putting x=15=-5y into slope intercept form

    • one year ago
  3. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    First, switch the sides, so you start with -5y on the left side.

    • one year ago
  4. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Next, the only thing happening to the y is that it is being multiplied by -5. How do you undo a multiplication?

    • one year ago
  5. whpalmer4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \[x+15 = -5y\]Divide both sides by -5 to give\[-\frac{x}{5} -3 = y\]Now switch the sides.

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

    Umm I think that by dividing?? So will that mean that I'm dividing 15 by -5y??

    • one year ago
  7. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Correct, divide both sides by -5

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

    So then what will happen next to the x??

    • one year ago
  9. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    -5y = x + 15 Divide -5y by -5 Divide x by -5 Divide 15 by -5

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

    OK I got -5-3=y ..?..?..?

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

    wait wait! I checked it and it actually its suppose to be y=-1/5-3

    • one year ago
  12. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    -5y/(-5) = x/(-5) + 15/(-5) y = -(1/5)x - 3

    • one year ago
  13. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Remember to include the x on the right side.

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

    YESSSSSSS!!!!!

    • one year ago
  15. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Since the original equation is now written in slope-intercept form, y = mx + b, you can read the slope directly. It's the number multiplying x, which is m. m = ?

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

    m=4 so then that will mean that the final answer will be y=-1/5x+4 xD

    • one year ago
  17. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Where did you get a 4 from y = -(1/5)x - 3?

    • one year ago
  18. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Remember, the slope-intercept form is y = mx + b, where m, the number multiplying x, is the slope.

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

    ohh ok then my bad

    • one year ago
  20. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1359263289699:dw|

    • one year ago
  21. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1359263320161:dw|

    • one year ago
  22. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    What is m, the slope?

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

    -1/5

    • one year ago
  24. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Correct. Now you know the given line has a slope of -1/5. The line that is parallel to it also has that slope becasue parallel lines have equal slopes. Now we start on the second part of this problem. What is the equation of the line that has slope -1/5 and passes through (0, 4)?

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

    4=-1/5(0)+b which will then turn into 4=0+b

    • one year ago
  26. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    In the slope-intercept form of the equation of a line, y = mx + b, m = slope (you already know this) b = the y-intercept Correct. b = 4, since the point you were given, (0, 4) is on the y-axis, so that is the y-intercept.

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

    Then I will do inverse operation and subtract 0 from both sides making it be 4=b

    • one year ago
  28. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Now you know your new equation has m = -1/5 and b = 4. All you need to do is write y = mx + b and replace m with -1/5 and b with 4

    • one year ago
  29. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Correct, b = 4

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

    and it will end up being y=-1/5x+4

    • one year ago
  31. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You are correct. Great work!

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

    OMG thank you so much your the best!!=D will you mind helping me with another type of problem.I have a quiz on Wednesday and I'm practicing right now.

    • one year ago
  33. mathstudent55 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I certainly will help. Just pls start a new post.

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

    OK then (:

    • 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.