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Math Help - Modulus equation

  1. #1
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    Modulus equation

    Graph the equation lxl + lyl =1 explain whether the graph represents the graph of a function of x

    any help would be great
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  2. #2
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    Re: Modulus equation

    Calmo 11
    you must know what |x| and |y| means . if x>0 the |x| = x while is x<0 then |x| = -x.
    Combine x ,y to be > or < 0 and you will get 4 cases. then graph the equation accordingly
    you will get a perfet square with centre at (0,0) and vertices A(0,1) ,B(1,0) ,C(0,-1), D(-1,0).

    for graphs belonging to functions the vertical line test must be satisfied... can you applied this test here?
    Please show us some of your work.
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