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March 25, 2017

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Determine the caresian equaiton of a plane that pass through point P(1,2,2) and is perpendicular to the line (x,y,z)= 3,-1,-4 + t(-2,3,1)

  • Vector - ,

    If the plane is perpendicular to
    L: (3,-1,-4)+t(-2,3,1)
    in which the vector (-2,3,1) is parallel to the line, and therefore perpendicular to the plane P, then
    the required plane is:
    -2x+3y+z+k=0
    where k is a constant to be determined.

    Since the required plan passes through P(1,2,2), we substitute P in the plane to get:

    -2(1)+3(2)+(2)+k=0
    or k=-6
    Therefore the plane is given by:
    -2x+3y+z-6=0

    Check by joining any two distinct points on the plane to form a vector and prove that the vector is perpendicular to line L.

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