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freemap

  • one year ago

Which ordered pairs are solutions to the inequality x + 3y ≥ –8? Choose all answers that are correct. A.(–5, –1) B.(0, –3) C.(–1, –2) D.(–6, 0) E.(–16, 2)

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  1. texaschic101
    • one year ago
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    this is just a matter of subbing and seeing which ones are true. Lets try the first one... x + 3y >= -8 (-5,-1)....x = -5 and y = -1 now we sub -5 + 3(-1) >= -8 -5 - 3 >= -8 -8 >= -8 --- correct because -8 = -8 so this is a solution. You want to try the next one ?

  2. freemap
    • one year ago
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    YES

  3. texaschic101
    • one year ago
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    x + 3y >= -8 (0,-3)...x = 0 and y = -3 now we sub 0 + 3(-3) >= -8 can you finish and see if it is true ?

  4. freemap
    • one year ago
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    -9 is less than -8 so false

  5. texaschic101
    • one year ago
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    wait...your sign is greater then or equal It is saying -9 is greater then or equal to -8....so it is false

  6. freemap
    • one year ago
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    sorry just looked at sign so it'll still be false because -9 is not greater than -8

  7. texaschic101
    • one year ago
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    keep this in mind....with positive numbers, the bigger the number, the greater it is...but with negatives, the smaller number is greater

  8. freemap
    • one year ago
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    Understood

  9. texaschic101
    • one year ago
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    want to try the next one because the 2nd one is not a solution

  10. freemap
    • one year ago
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    yes I'll try, just a sec

  11. freemap
    • one year ago
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    5>-8 which is true

  12. texaschic101
    • one year ago
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    x + 3y >= -8...x = -1 and y = -2 -1 + 3(-2) >= -8 -1 - 6 >= -8 -7 >= -8......this is true

  13. freemap
    • one year ago
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    I was just about to submit -7>=-8 which is true. Instead of me multiplying 3 *-2 I did 3*2

  14. texaschic101
    • one year ago
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    lol...be careful of your signs....they can mess with you every time

  15. freemap
    • one year ago
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    Every single time lol, about to work out the next one

  16. texaschic101
    • one year ago
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    ok...you know how to do this..you have proven that...now let see what you can do :)

  17. freemap
    • one year ago
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    -6>-8 is true

  18. texaschic101
    • one year ago
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    correct ^^ I told you that you could do this...great job

  19. freemap
    • one year ago
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    Thanks lol, Last one here I go

  20. freemap
    • one year ago
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    -10>-8 is false

  21. texaschic101
    • one year ago
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    you did it again...correct....woot woot...doing the happy dance now :)

  22. freemap
    • one year ago
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    lol Me to Celebration time, Thanks so much means so much that you'd stay even though I'm slow. I wish I could be like you just work problems out in a second without help. Thankssss

  23. texaschic101
    • one year ago
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    it takes practice and patience. You will one day be helping others learn this stuff. So your solutions are A,C,D because B and E were false....but you already knew this so why am I telling you...lol

  24. freemap
    • one year ago
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    lol I'm so happy. Thank you so much. I have one more question I think its A, its a graph though uggh! would you help, I'll post again?

  25. texaschic101
    • one year ago
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    you can post on this post....but I can't make any promises about knowing the answer....graphs are not my friend...lol

  26. freemap
    • one year ago
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    Thanks for helping

  27. freemap
    • one year ago
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    Which is the graph of y ≤ 1 – 3x?

  28. freemap
    • one year ago
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  29. freemap
    • one year ago
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    I said A because it has a solid line, and its less than so it goes to the left

  30. texaschic101
    • one year ago
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    y = -3x + 1 --- I just rearranged it and temporarily removed the < sign y intercept is 1 or (0,1) x intercept can be found by subbing in 0 for y.. 0 = -3x + 1 3x = 1 x = 1/3 ... or (1/3,0) now back to your signs....it contains an equal sign, so it is a solid line. It is < (less then) so shading occurs below (or to the left) of the line. the correct graph is : A...you are correct :)

  31. texaschic101
    • one year ago
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    it takes me a little longer with graphs...lol

  32. freemap
    • one year ago
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    Never a problem, Thanks you're a hero. I'm going to take what you taught and apply to my other ones. Have a great night. I always like getting help from you, so great at explaining complicated things. Thanks so so much

  33. texaschic101
    • one year ago
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    glad to help :) good luck

  34. freemap
    • one year ago
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    Thank you

  35. texaschic101
    • one year ago
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    :)

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