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Math Help - Interval Notation

  1. #1
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    Interval Notation

    I have a question that wants me to show in in interval notation but don't get how to show it.

    Question:
    p is less than 9 but no less than -1

    if p is less than 9 then it should be
    p < 9

    then it says but no less than -1, this is where it got me thinking where do i put it?
    this is what i have

    -1 > p < 9

    The problem is that both arrows are pointing at each other and wonder is that correct or is it wrong please help thanks.
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  2. #2
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    Quote Originally Posted by xJenniferx View Post
    I have a question that wants me to show in in interval notation but don't get how to show it.

    Question:
    p is less than 9 but no less than -1

    if p is less than 9 then it should be
    p < 9

    then it says but no less than -1, this is where it got me thinking where do i put it?
    this is what i have

    -1 > p < 9

    The problem is that both arrows are pointing at each other and wonder is that correct or is it wrong please help thanks.
    Don't let the negative sign confuse you. If p were to be no less than, say, 1 then you'd have
    1 \leq  p < 9

    So just put a -1 where you have the 1:
    -1 \leq p < 9

    -Dan
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