Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    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

    StatusX

    User Avatar
    Homework Helper

    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
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook