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Math Help - equation symmetry

  1. #1
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    equation symmetry

    find the symmetric equations of the straight line that passes through the point (1, -2, 3) and is perpendicular to the plane 2x + 3y = 0

    help please.
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  2. #2
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    Hello, rcmango!

    This is quite straight-forward.
    Exactly where is your difficulty?


    Find the symmetric equations of the straight line that passes through the point (1,-2,3)
    and is perpendicular to the plane 2x + 3y = 0

    We have a point on the line: .(x1, y1, z1) .= .(1,-2,3)

    Since the line is perpendicular to the plane,
    . . its direction is the normal vector of the plane: .[2,3,0]

    Can you write the symmetric equatons now?

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