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Homework Help: HELP <20 mintues to Turn in online!

  1. Sep 19, 2006 #1
    1.) Find vector parametric equation for the line through the point P=(1,4,–5) perpendicular to the plane –5x+3y–4z=–4.

    Any help would be great
  2. jcsd
  3. Sep 19, 2006 #2


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    Tom, you've been here long enough to know the rules!
  4. Sep 19, 2006 #3
    I know I just need a hint
    like how to find the normal vector or something
    i wasn't hoping for the answer
  5. Sep 19, 2006 #4


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    The normal vector to a plane given by an equation ax+by+cz=0 is easy: all vectors (x,y,z) in the plane satisfy that equation, so are clearly normal to the vector... Replacing the 0 by a constant just shifts the plane, so the normal vector doesn't change.
  6. Sep 19, 2006 #5
    thx guys for the hint but i'm to late... just have to get it done earlier next time
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