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anonymous

  • one year ago

who wanna help me plot these x+y<or equal to 12 y=<or equal to 2x+3 x>or equal to 0 y>or equal to 0

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  1. welshfella
    • one year ago
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    for the first one plot the graph of x + y = 12 can you do that?

  2. welshfella
    • one year ago
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    it is easy note that when x = 0 y =12 and when y = 0 x = 12 so plot the point (0,12) and (12,0) and join them up It well be a straight line.

  3. welshfella
    • one year ago
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    the for x + y <= 12 shade the area below the line

  4. anonymous
    • one year ago
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    sorry i still dont understand its suppose to \[y=\le2x+3\]

  5. anonymous
    • one year ago
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    but is the plot 0,12

  6. welshfella
    • one year ago
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    i described is the plot of x + y <= 12

  7. anonymous
    • one year ago
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    no \[y=\le2x+3\]

  8. welshfella
    • one year ago
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    plot the line 2x + 3 first plot 3 points - they should be in a straight line if youhave done them correctly one point would be when x = 0:- y = 2(0) + 3 = 3 so this point will be (0,3) plot 2 more

  9. anonymous
    • one year ago
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    what about this one \[y \le2x+3\]

  10. welshfella
    • one year ago
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    this one will be the areas below the the line y = 2x + 3 - shade it in.

  11. welshfella
    • one year ago
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    it will look something like this:- |dw:1434652208765:dw|

  12. anonymous
    • one year ago
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    lol ok but what's the plot it's hard for me to make plots without numbres on the graph

  13. welshfella
    • one year ago
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    well you cant plot points accurately without numbers on the graph. Haven't you got graph paper?

  14. anonymous
    • one year ago
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    |dw:1434652783850:dw|

  15. welshfella
    • one year ago
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    ???? what does 510 mean?

  16. anonymous
    • one year ago
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    5,0

  17. welshfella
    • one year ago
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    No 5,0 is not a point on the line but it is a point in the shaded area

  18. welshfella
    • one year ago
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    |dw:1434652672135:dw|

  19. welshfella
    • one year ago
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    thats the point 90.3) where the line cuts the y-axis

  20. welshfella
    • one year ago
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    *(0,3)

  21. anonymous
    • one year ago
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    i thought the other one was 0,3 or is that for both of them

  22. welshfella
    • one year ago
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    another point would be when x = 1 y = 2(1) + 3 = 5

  23. welshfella
    • one year ago
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    @dianolove - sorry I can't stay any longer . I've got to go right now.

  24. anonymous
    • one year ago
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    it's ok ttyl

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