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Math Help - What graph would be a straight line?

  1. #1
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    What graph would be a straight line?

    ........................
    Last edited by jisaac; June 24th 2008 at 03:11 AM.
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  2. #2
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  3. #3
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    Quote Originally Posted by colby2152 View Post
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    soz -just updated the link!
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  4. #4
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    Hello,

    The tip is to substitute, for example in the first question, R_p by x.
    If \sqrt{v_{esc}}=kx, where k is a constant, then it's a line.

    For the fourth one, substitute x=\frac{1}{R_p} and see if v_{esc}=k' \ x, where k' is also a constant.
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  5. #5
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    ok thanks got the answer
    Last edited by jisaac; June 23rd 2008 at 02:02 PM.
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