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Math Help - Parametric equation

  1. #1
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    Exclamation Parametric equation

    Find parametric equations for the line through the point(0,1,2) that is perpendicular to the line x=1+t, y=1-t, z=2t and intersects this line.

    I am wondering that intersects what line.

    Does this question give enough information for calculating?

    If yes, how can I calculate it.
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  2. #2
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    Find parametric equations for the line through the point(0,1,2) that is perpendicular to the line x=1+t, y=1-t, z=2t and intersects this line.

    "this line" refers to the line given parametrically by x=1+t, y=1-t, z=2t.

    Otherwise, the problem would have been asking you to find a line that intersects itself, which is stupid. Still, as it is now, the "and intersects this line" bit is redundant/useless information (since by definition, two perpendicular lines INTERSECT to form a 90 degree angle).

    Rewrite the problem lopping off the last 4 words, i.e.,
    Find parametric equations for the line through the point(0,1,2) that is perpendicular to the line x=1+t, y=1-t, z=2t.
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  3. #3
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    Now does this problem make sense? If not, we can get into that.
    -Andy
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