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Math Help - Inquality Question

  1. #1
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    Inquality Question

    i usually don't have much of a hard time, working these, but this one got me:

    y - 2x > 3

    the box of values given is: x: 0 1 2
    and obviously the y section is blank.
    i have to explain how i determined which one to shade or whateva.
    yeh, but when your figuring out the numbers to put in the box, do you leave out the inequality sign?
    this one is kinda harder than usual, can you guys take me through?
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  2. #2
    MHF Contributor Mathstud28's Avatar
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    Quote Originally Posted by Quester View Post
    i usually don't have much of a hard time, working these, but this one got me:

    y - 2x > 3

    the box of values given is: x: 0 1 2
    and obviously the y section is blank.
    i have to explain how i determined which one to shade or whateva.
    yeh, but when your figuring out the numbers to put in the box, do you leave out the inequality sign?
    this one is kinda harder than usual, can you guys take me through?
    What is this box you speak of
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  3. #3
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    well you know how you plot figures for inequaliy on grids.

    see attachment
    Attached Files Attached Files
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  4. #4
    MHF Contributor Mathstud28's Avatar
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    Quote Originally Posted by Quester View Post
    well you know how you plot figures for inequaliy on grids.

    see attachment
    Hmm...I have actually never seen this...this is strange considering it is in a form that implies bijection..which is not the case in an inequality..maybe it wants you to list the points of the line y=2x+3?
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  5. #5
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Mathstud28 View Post
    Hmm...I have actually never seen this...this is strange considering it is in a form that implies bijection..which is not the case in an inequality..maybe it wants you to list the points of the line y=2x+3?
    That would be my guess.

    -Dan
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  6. #6
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    well it is written like this: y-2x x >3
    the > is mean to say that whatever y is, it's larger than 3.
    do you have any ideas?
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  7. #7
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    the box basically helps you find the numbers, to plot on the graph.
    and to help you determine where to shade, if it's true.
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  8. #8
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    could it be

    regions you check to see if the points are true or false
    pick two coordinates either side of line
    which ever agrees with the answer of the inequality=true
    therefore shade in this side of the line
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