A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Line M is represented by the following equation: x − y = 8 Which equation completes the system that is satisfied by the solution (18, 10)? 2x − y = 26 x + y = 18 2x − 2y = 36 x − y = −28

  • This Question is Open
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @angel_mejia

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

    (18,10) tells us that x = 18 and y = 10 so, go through each answer choice one by one, and plug in x = 18 and y = 10, and see which one is true

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    c? @Vocaloid

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

    nope, check your math again

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

    b?

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

    please do not guess, go through each answer choice one by one and plug in the numbers

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

    start with the first choice: 2x − y = 26, true or false?

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I'm having really hard time and have a huge time crunch

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

    again, start with the first choice... 2x - y = ?

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i don't even know where to start :c

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

    x = 18 y = 10 2x = ?

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

    36?

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

    right, so 2x - y = ?

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

    26

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

    right. the first choice says that 2x − y = 26, so this is our answer

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

    thank u sm,can u do another plz?

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

    sure

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    give me one sec

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Line M is represented by the following equation: x + y = −1 What is most likely the equation for line P so the set of equations has infinitely many solutions? 2x + 2y = 2 2x + 2y = 4 2x + 2y = −2 x − y = 1

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

    hint: multiply x + y = -1 by 2 on both sides

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

    im so confused ;c

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

    just multiply everything by 2.... x + y = -1

  23. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so x+y=-1 multiplied by 2 would be 2x+2y=-2?

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

    yes, and that's your answer

  25. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank u! one more?

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

    sure..

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

    Two lines, A and B, are represented by the following equations: Line A: y = x − 1 Line B: y = −3x + 11 Which of the following options shows the solution to the system of equations and explains why? (3, 2), because the point does not lie on any axis (3, 2), because one of the lines passes through this point (3, 2), because the point lies between the two axes (3, 2), because both lines pass through this point

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

    hint: first multiply line A by 3

  29. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y=x -3?

  30. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Vocaloid

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

    not quite, you need to multiply EVERYTHING by 3

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

    3y=3x-3

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

    right, next step: line A: 3y = 3x - 3 line B: y = -3x + 11 now add line A + line B

  34. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3y=0x+14

  35. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    nope, check your math again... 3y + y = ?

  36. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im not sure

  37. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    3y + y = __y fill in the blank

  38. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4y

  39. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what does y equal?

  40. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    we're about to find out! now, when we add line A and line B together, we get 4y on the left side. and -3+11 on the right side. so 4y = -3+11

  41. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -3+11 = ?

  42. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    8

  43. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right. so 4y = 8 what is y?

  44. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4?

  45. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    4y = 8 divide both sides by 4, what do you get?

  46. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1,2

  47. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right, so we get y = 2

  48. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now we go to our second equation: y = -3x + 11 now we plug in y = 2 2 = -3x + 11 what is x?

  49. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I'm sorry i have to go to lunch with my fan and this is my last question, can i plz just have the answer

  50. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.