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

2016740e Group Title

Which point lies in the solution set for the following system of inequalities? 2x + y < 4 x - y > 3 Answer (2, -3) (5, -2) (3, 4) (0, 0)

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. Limitless Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I'm just curious. Why not compute it yourself? Put the points in. See if they work.

    • 2 years ago
  2. 2016740e Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i did n they all come out to be false so i might doing something wrong but idk

    • 2 years ago
  3. Limitless Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok. (0,0) doesn't work. You can tell that immediately. To check if a point \((x_1,y_2)\) works, just put it in like this: \(2x_1+y_1<4\) and \(x_1-y_1>3\). Here's an example: To test \((8,9)\) we do this: \[ \begin{align} 2(8)+(9)&<4\\ 16+9&<4\\ 25&<4 \end{align} \] Since \(25\) is not less than \(4\), the point \((8,9)\) does not work. Try the other points just like this. If they work for one inequality, check the other. If they work for both, then that's the point you pick. :D

    • 2 years ago
  4. 2016740e Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    haha i got it thanks :)

    • 2 years ago
  5. Limitless Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    YAAAAYYYYYYYY WOOOHOO :D

    • 2 years ago
  6. 2016740e Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    lol :p

    • 2 years ago
  7. vanihba Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    you can try making the graph for better understanding

    • 2 years ago
  8. Limitless Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ^this, too, helps.. unless you're as lazy as I am.

    • 2 years ago
  9. Limitless Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Heck, I visualize them more often than I do actually graph them..

    • 2 years ago
  10. 2016740e Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i did that graph thing and i got it the same thing as i did when i plugged in the numbers

    • 2 years ago
  11. Limitless Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    You are supposed to. They represent the same thing.

    • 2 years ago
  12. 2016740e Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yeaa ik i get what i was doing wrong

    • 2 years 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.