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Math Help - domain and range

  1. #1
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    domain and range

    I'm asked to find the domain and range of this function:

    x = -|y|

    Since |y| \geq 0 then -|y| \leq 0. So, I think the range of this function be (-\infty,0].

    I'm not sure how to find the domain though. Would the domain just be all reals? e.g. (-\infty,\infty)
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  2. #2
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    Quote Originally Posted by absvalue View Post
    I'm asked to find the domain and range of this function:

    x = -|y|

    Since |y| \geq 0 then -|y| \leq 0. So, I think the range of this function be (-\infty,0].

    I'm not sure how to find the domain though. Would the domain just be all reals? e.g. (-\infty,\infty)
    Looks right to me, any real value of y would produce real x
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  3. #3
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    graph ...
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