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anonymous

  • one year ago

hlp

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    @jim_thompson5910 Help idk how to do this

  3. jim_thompson5910
    • one year ago
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    I suggest your first step is to graph all of the inequalities on the same xy plane

  4. jim_thompson5910
    • one year ago
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    desmos is probably a handy tool for that https://www.desmos.com/calculator

  5. anonymous
    • one year ago
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    Ok and then what?

  6. jim_thompson5910
    • one year ago
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    tell me when you have your graph all done

  7. anonymous
    • one year ago
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    How do I graph them all on the same plane

  8. jim_thompson5910
    • one year ago
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    so you haven't graphed any of them?

  9. anonymous
    • one year ago
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    Idk how to do it on desmos

  10. jim_thompson5910
    • one year ago
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    well to type in something like \(\LARGE x \ge 1\) you would type in `x >= 1` the `>=` means "greater than or equal to"

  11. anonymous
    • one year ago
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    Ok I have the graph

  12. anonymous
    • one year ago
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  13. jim_thompson5910
    • one year ago
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    it might be really hard to see, but do you see where ALL of the regions overlap?

  14. anonymous
    • one year ago
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    yes i can see that

  15. jim_thompson5910
    • one year ago
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    what is the shape of that region I'm referring to?

  16. jim_thompson5910
    • one year ago
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    close

  17. anonymous
    • one year ago
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    This one

  18. jim_thompson5910
    • one year ago
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    yes, the trapezoid

  19. jim_thompson5910
    • one year ago
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    find the corner points of the trapezoid

  20. anonymous
    • one year ago
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    (3, 4)

  21. jim_thompson5910
    • one year ago
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    (3,4) is not one of those 4 corner points

  22. anonymous
    • one year ago
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    Oh (3, 3.5)

  23. jim_thompson5910
    • one year ago
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    that's one of them

  24. anonymous
    • one year ago
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    and (1, 4.5)

  25. jim_thompson5910
    • one year ago
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    good, there are 2 more

  26. anonymous
    • one year ago
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    (1,0) and (3,0)

  27. jim_thompson5910
    • one year ago
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    very good

  28. jim_thompson5910
    • one year ago
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    now plug each point into the f(x,y) function and record the outputs

  29. anonymous
    • one year ago
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    Wait so how would I plug them in?

  30. anonymous
    • one year ago
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    Can you do the first one so I can see what it looks like

  31. jim_thompson5910
    • one year ago
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    Plugging in (x,y) = (1,0) \[\Large f(x,y) = 2x - y + 2\] \[\Large f(1,0) = 2*1 - 0 + 2\] \[\Large f(1,0) = 4\]

  32. anonymous
    • one year ago
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    so the answer would be 4?

  33. jim_thompson5910
    • one year ago
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    no, that's just one output

  34. jim_thompson5910
    • one year ago
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    plug in the other corner points and tell me what the outputs are

  35. anonymous
    • one year ago
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    wait we r finding the minimum value right?

  36. jim_thompson5910
    • one year ago
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    yeah you're looking for the smallest output of f(x,y)

  37. anonymous
    • one year ago
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    oh so how do i do the next ones/

  38. jim_thompson5910
    • one year ago
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    plug in (x,y) = (3,0) to get f(3,0) = ???

  39. anonymous
    • one year ago
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    f(3,0)=0??

  40. jim_thompson5910
    • one year ago
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    try again

  41. anonymous
    • one year ago
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    i srsly have no idea @jim_thompson5910

  42. jim_thompson5910
    • one year ago
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    replace every x in 2x-y+2 with 3 replace every y in 2x-y+2 with 0

  43. jim_thompson5910
    • one year ago
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    you might be overthinking or overcomplicating things?

  44. anonymous
    • one year ago
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    Pick an answer and explain.

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