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Homework Help: Parametric equations

  1. Sep 2, 2008 #1
    1. The problem statement, all variables and given/known data

    Find a vector equation and parametric equations in t for the line through the point and parallel to the given line.
    (0, 12, -11)
    x = -5 + 3t, y = 4 - 2t, z = 1 + 8t

    2. Relevant equations

    x = x0 + at y = y0 + bt z = z0 + ct

    3. The attempt at a solution

    I know how to work this problem if i'm given the point and the vector,

    when you have a point(a,b,c) and vector (x,y,z) you just do

    r = (ai + bj + ck) + t(xi + yj + zk)

    ....but I can't figure out how to do it when the line is given like this.
  2. jcsd
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