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    Linear programming:

    When it's e.g

    3x + 4y > 360
    Or
    1/2x>5y

    How do you know what area to shade off?
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    (Original post by ULTRALIGHT BEAM)
    Linear programming:

    When it's e.g

    3x + 4y > 360
    Or
    1/2x>5y

    How do you know what area to shade off?
    I would rearrange the equation to you typical y = mx + c and draw it in. Now I would choose a random point below the line and look at the x value and y value and see if they fit the inequality.
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    (Original post by maggiehodgson)
    I would rearrange the equation to you typical y = mx + c and draw it in. Now I would choose a random point below the line and look at the x value and y value and see if they fit the inequality.
    What do you mean?
    So with 3x+4y=360
    y=-3/4X+90

    What do you mean by choosing a line?
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    always get the y on the left of the arrow ?

    once that is in place you just look for

    >....only allowed above the dotted line

    <.... only allowed below the dotted line

    etc
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    (Original post by the bear)
    always get the y on the left of the arrow ?

    once that is in place you just look for

    >....only allowed above the dotted line

    <.... only allowed below the dotted line

    etc
    yes.

    let's say you had y > 3x + 4. You put your pencil below the line at x = 2, read off the y value and see if it's > 10. Shade accordingly.
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    (Original post by maggiehodgson)
    yes.

    let's say you had y > 3x + 4. You put your pencil below the line at x = 2, read off the y value and see if it's > 10. Shade accordingly.
    Ohright thanks xx
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    hegarty maths probably explains it quite well.
 
 
 
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