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

jenni_fowler

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

  • one year ago
  • one year ago

  • This Question is Closed
  1. sumanthy
    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

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

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

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

    There is one more method called Elimination :)

    • one year ago
  4. shahzadjalbani
    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.

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

    oh

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

    shahzadjalbani gave elimination method :)

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

    ah i like that way better i think

    • 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.