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freemap

  • one year ago

Graph the system of inequalities. Then use your graph to determine which points are solutions of the system. x > 3 y ≤ 2x – 5 Choose all answers that are correct. A.(4, –4) B.(4, 8) C.(5, 10) D.(6, 0) E.(6, –2)

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  1. freemap
    • one year ago
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    @undeadknight26

  2. undeadknight26
    • one year ago
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    Do you know how to graph them?

  3. freemap
    • one year ago
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    I think you say like since -5 is the y intercept you graph that at 0,-5. And go over 5 and 2 up for 2x. I think

  4. undeadknight26
    • one year ago
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    Try desmos graphing.

  5. freemap
    • one year ago
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    Whats desmos graphing?

  6. texaschic101
    • one year ago
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    do you really have to graph...because this can be solved without graphing

  7. imqwerty
    • one year ago
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    can u graph x=3 and y=2x-3 :)

  8. undeadknight26
    • one year ago
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    You can plug and play but it says to graph lol.

  9. freemap
    • one year ago
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    No, They just gave me answer choices @texaschic101

  10. texaschic101
    • one year ago
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    than just plug your answer choices into the 2 inequalities and see which ones are true. Keep in mind, they both have to be true for it to be a solution.

  11. imqwerty
    • one year ago
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    yes u can find the answer by pluggin in the options :)

  12. freemap
    • one year ago
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    Do you like multipy and add to find the answer?

  13. texaschic101
    • one year ago
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    Let me do the first one for you.....we will be using (4,-4)...x = 4 and y = -4 now lets begin.. x > 3....sub in 4 for x 4 > 3.....this is true now we have to check it with the other inequality. y <= 2x - 5....sub in 4 for x and -4 for y -4 <= 2(4) - 5 -4 <= 8 - 5 -4 <= 3....this is also true and since both are true, this is a solution understand ?

  14. freemap
    • one year ago
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    I do understand, this is kinda like what we did yesterday

  15. texaschic101
    • one year ago
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    just be sure that both inequalities are true....because if you sub in your points and only one inequality is true, it is NOT a solution because they both have to be true

  16. freemap
    • one year ago
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    Ok

  17. freemap
    • one year ago
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    I will attempt to do the next one

  18. texaschic101
    • one year ago
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    Because if you look at the first inequality x > 3....all of the answer choices are correct for this. So I would just check the answer choices with the 2nd inequality.

  19. freemap
    • one year ago
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    ok, smart plan

  20. texaschic101
    • one year ago
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    so y <= 2x - 5.......is (4,8) a solution ? Can you tell me ?

  21. freemap
    • one year ago
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    I am working in out 8<=2(4)-5 8<8-5 8<3 8 is not less than 3 so false

  22. texaschic101
    • one year ago
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    you are correct....and since (4,8) does not make BOTH inequalities true, then it is NOT a solution. Good job...way to go :)

  23. freemap
    • one year ago
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    Thanks ok for the next one 10<2(5)-5 10<10-5 10<5 10 is not less than 5 10>3 Is true, but not for both equations. So False

  24. texaschic101
    • one year ago
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    correct...(5,10) is not a solution

  25. freemap
    • one year ago
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    Next one, 0<2(6)-5 0<12-5 0<7 0 is less than 7 so true 0>3 0 is not more than 3 so false So false

  26. texaschic101
    • one year ago
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    try again..... x > 3 (6,0)...x = 6 and y = 0........do not get your x's and y's mixed up

  27. texaschic101
    • one year ago
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    x > 3......x = 6 6 > 3...true and (6,0) also makes the other inequality correct....so (6,0) IS a solution

  28. freemap
    • one year ago
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    I'm sorry like you said got my x and y mixed up, helps to get a clean sheet of paper to lol

  29. texaschic101
    • one year ago
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    lol...yes...that helps. To many numbers and letters mixed on one piece of paper will drive you insane

  30. freemap
    • one year ago
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    lol, hopefully I'll get this one right 6>3 True 6 is more than 3 -2<2(6)-5 -2<12-5 -2<7 -2 is less than 7 so true Both equations are true

  31. texaschic101
    • one year ago
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    you got it....(6,-2) is a solution.....nicely done :)

  32. freemap
    • one year ago
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    Thanks you so A, D, E

  33. texaschic101
    • one year ago
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    yep.....lol...I had to go back up and look...its A,D,E

  34. freemap
    • one year ago
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    Thanks such a great help

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