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Math Help - Equations

  1. #1
    Member GAdams's Avatar
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    Equations

    I got Lines S and P for (a) (i) and Line S for (ii). I can't get (b) and (c). Help.
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  2. #2
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    the gradient of a line is another word for the slope, namely the change in y coords over the change in x. it can be derived from the standarrd equation of a line, namely y = mx +b, where b is the gradient.

    For the last one, think of the defnition of being pependicilar (they intersect at a right angle, the slope of one line = the negative inverse of the other)

    good work on the other problems btw
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Ilaggoodly View Post
    the gradient of a line is another word for the slope, namely the change in y coords over the change in x. it can be derived from the standarrd equation of a line, namely y = mx +b, where b is the gradient.
    the standard form is what the line was in before, y = mx + b is the slope-intercept form. m is the gradient. b is the y-intercept


    For the last one, think of the defnition of being pependicilar (they intersect at a right angle, the slope of one line = the negative inverse of the slope of the other line)
    that's correct
    Last edited by Jhevon; June 23rd 2007 at 03:59 PM.
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  4. #4
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    my bad, it is indeed called slope intercept form. its so standard it should be called standard form :P but ill consult the mathematical gods about that one later...
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  5. #5
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Ilaggoodly View Post
    my bad, it is indeed called slope intercept form. its so standard it should be called standard form :P
    i kind of agree with you there, its the form everyone is most acquainted with, it should be called standard
    but ill consult the mathematical gods about that one later...
    when you have your audience with the math gods, tell them to endow Jhevon with more mathematical power
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