A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 4 years ago

Can someone explain to me how to solve this? Which of the following points lie in the solution set to the following system of inequalities? y ≤ x - 5 y ≥ -x - 4 A. (-5, 2) B. (5, -2) C. (-5, -2) D. (5, 2)

  • This Question is Closed
  1. agreene
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    plug and chug would be the easiest way. the points are given in: (x,y) form, so you can plug them in for the equations, only one set will work on both

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

    I was thinking B

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

    For the case of B): (5,-2) eqn 1: 2 ≤ 5-5 2 ≤ 0 <--- not true, can't be B. For the case of C: (-5,-2) eqn 1: -2 ≤ -5 - 5 -2 ≤ -10 <--- not true, can't be C As it happens, this also rules out A and D. the actual roots for this system are: x= 1/2; y =-9/2 and x>1/2; -x-4≤y≤x-5

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

    Wait? So, whats the answer? You ruled all of the answers out?

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

    and you made a mistake on the first equation, its suppose to be a negative 2, not positive.

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

    how am I suppose to answer it if all of the answer choices are wrong? this is confusing? lol

  7. agreene
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    indeed i did, -2 ≤ 0 is true, y ≥ -x - 4 -2 ≥ -5 -4 -2 ≥ -9 is also true, I'm dumb, sorry... B is correct.

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

    haha its okay, I do it all the time, hahaha :D Thanks for your help! :)

  9. 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.