A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Determine which system below will produce infinitely many solutions. −6x + 3y = 18 4x − 3y = 6 2x + 4y = 24 6x + 12y = 36 3x − y = 14 −9x + 3y = −42 5x + 2y = 13 −x + 4y = −6

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

    Please help me

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

    infinitely many solutions occur when one equation is a multiple of the other. Basically they produce they produce the same line in the coordinate plane.

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

    Okay.. so what would I do to find the answer?

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

    an example would be x + y = 6 -2x - 2y = -12 - because the second equation = first multiplied by -2

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

    see if you can find something similar in the 4 given options are the y , x terms and the number in one equation multiplied by the same value to get the other?

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

    Oh okay, I'll look back at them and see. Thank you so much !!

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

    yw Hint - at first it looks like number 2 is the one because 2x* 3 = 6x and 4y * 3 = 12y but 24 *3 does not equal 36 so its not that one.

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

    Yeahh true ... hm. Algebra is my hardest so I dont really know what to do exactly

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

    look at number 3 how do you go from 3x to -9x, and -y to 3y and 14 to -42?

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

    It multiplies by 3 ?

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

    -3*

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

    |dw:1441297958917:dw|

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

    almost - its by -3

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

    so thats the one get it?

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

    So they multiply it by -3 . So that would be the answer?

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

    yes

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

    Yes thank you so much! It's way better to help with the problem instead of just giving the answer... so thank you

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

    if you plotted them on a graph paper thay would be the same line. That is why there are infinite solutions - they are all along this infinitely long line!

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

    yes - you learn something that way.

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

    Oh okay.. now I know this for future references. And yess !

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

    great

  22. 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.