A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

find the y- coordinate of the point of intersection of the lines -2x-3y=1 5x + 2y =1

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

    since we need to find y co-ordinate, lets try to eliminate 'x' do you know the method of elimination?

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

    we eliminate the 2x and the 5x

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

    lets start by multiplying 1st equation by 5 multiply each term of -2x-3y=1 by 5 what do u get?

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

    -10x-15x=5

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

    good! now multiply each term of 5x+2y=1 by 2 so that you get 10x for this too!

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

    then all you have to do is just add the 2 new equations :)

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

    10x -5y=10

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

    did you multiply each term by 2?

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

    5x+2y =1 2*5x + 2*2y = 2*1 ....

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

    ooops! -7/11

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

    correct :)

  12. 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.