Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

jenni_fowler

  • 3 years ago

solve the system of equations y=2x-10 and x-y=7

  • This Question is Closed
  1. sumanthy
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    By substituion: put y=2x-10 in x-y=7 x-(2x-10)=7 x-2x+10=7 -x=7-10 -x=-3 x=3 Put x=3 in y=2x-10 y=2*3-10 y=-4

  2. sumanthy
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Graphically you can draw the lines and find the point of intersection.

  3. sumanthy
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    There is one more method called Elimination :)

  4. shahzadjalbani
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    y=2x-10 can be changed into 2x-y=10 now subtract equation 2 from 1 2x-y=10 x-y=7 ------------ x=3 put value of x in first equation you will get value of y.

  5. jenni_fowler
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh

  6. sumanthy
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    shahzadjalbani gave elimination method :)

  7. jenni_fowler
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ah i like that way better i think

  8. 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