A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Which of the following is the inequality for the graph? Answers: y > 2x - 4 y < 2x + 4 y > 1/2 x - 4 y < 1/2 x +4

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

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

    @ganeshie8 @Hero @pooja195 @dan815 @hartnn @Michele_Laino

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

    @Directrix @Daniel_Chernioglo @freckles @AaronAndyson @clamin @Loser66 @HelloKitty17

  4. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so firstly, you want to try and find the equation of the line in the form y = mx + b

  5. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    from the graph, we can see that the y intercept (b) is -4

  6. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and we can find the slope by picking any two points which lie on the line and applying \[slope = \frac{ y2 - y1 }{ x2 - x1 }\]

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

    Oh okay, I think I remember this

  8. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay cool :) so show me what you get for the equation of the line and we can go from there

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

    Okay so I picked the points (1,-2) and (0,2) then It would be 2 - -2/ 0- -1 Right?

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

    @FireKat97

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

    The answer is either y > 2x -4 or y > (1/2)x -4 because the dashed boundary line is shaded on the "above" section which indicated that this is a greater than situation.

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

    @Directrix Thanks you! Thant makes sense. I'm sorry this is my first time doing this. So what do I do next to find the answer?

  13. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (1, -2) is correct, however (0, 2) does not lie on the line, I think you mean (2, 0), so try finding the slope again @Marilynmonroe

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

    Compare these two graphs to the given one.

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

    @FireKat97 Yes Thank you for correcting me!

  16. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No problem :) @Marilynmonroe

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

    That does not seem to be of much help. Let me graph on another program. We could test points.

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

    @Directrix Okay (:

  19. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Marilynmonroe did you work out the gradient again?

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

    Yes would it be 0 - -2/ 2 - 1 = -2/1 ?

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

    @FireKat97

  22. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so you have \[\frac{ 0 - - 2 }{ 2 - 1 } = \frac{ 2 }{ 1 } = 2\] but you set it up correct

  23. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    but now that we have our m and b, we can sub these into y = =mx + b to find the equation the line

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

    Okay so would it be y = 2x+ -4 ?

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

    @FireKat97

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

    Finally, my answer. y > 2x - 4

    1 Attachment
  27. Directrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    The boundary line passes through (2,0) as it does on the given green graph.

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

    @Directrix Thank you!!

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

    Boundary line for the other is way off from that of the green.

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

    I apologize for being such a dunce on this problem. My brain froze. Congrats to you for hanging in there and not giving up. @Marilynmonroe

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

    @Directrix Its no problem. Thank you!

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

    You are welcome.

  33. 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.