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Math Help - inequalities

  1. #1
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    california
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    inequalities

    Plot the points A = (4,0), B=(4,5), C=(0,7), and D= (0,0).
    Write a series of simultaneous inequalities that describe the region enclosed by the quadrilateral ABCD formed by the joining four points.

    My answer is y > or equal to 0

    x > or equal to 0

    x < or equal to 4

    y < or equal to -1/2x + 7

    is my answer correct?


    Vicky
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  2. #2
    Senior Member
    Joined
    Jul 2009
    Posts
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    Hi Vicky1997

    I think your answer is right and it also can be written as :

    0\leq x\leq 4

    0\leq y\leq -\frac{1}{2}x + 7
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