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

Rachel98

I'm not getting this whole special system of equations thing. Please help me understand Question: Which system has an infinite number of solutions? A: y = 2x - 5 and - 2 = y - 2x. B: x + 2 = y and 4 = 2y - x. C: y + 3 = 2x and 4x = 2y - x. D: 2y + 6 = 4x and - 3 = y - 2x.

  • one year ago
  • one year ago

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

    If one equation is a multiple of the other equation, then both equations are the same, thus having infinite solutions.

    • one year ago
  2. Rachel98
    Best Response
    You've already chosen the best response.
    Medals 0

    What do you mean by multiple?

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

    What I mean is, there exists a set of equations such that one of them has been multiplied by a number to disguise the fact that both of them are equal.

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

    Also, terms have been switched around to disguise it even further.

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

    For example, I can take y = 2x + 3 If I multiply that by 3 I get 3y = 6x + 9

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

    I can switch terms around to get -9 = 6x - 3y

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

    But no matter how much I manipulate this equation, each line is equivalent to the previous one.

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

    So find the system where such a condition exists.

    • 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.