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Math Help - paralell to xy, yz, xz plane

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    paralell to xy, yz, xz plane

    I need some clarification on what being parallel to the xy, yz, and zx planes would mean when you are talking about parametric and symmetric equations.
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    Re: paralell to xy, yz, xz plane

    Quote Originally Posted by shmiks View Post
    I need some clarification on what being parallel to the xy, yz, and zx planes would mean when you are talking about parametric and symmetric equations.
    The line \ell(t):P+\vec{D}t is parallel to the xy\text{-plane} provided \vec{D}\cdot \vec{k}=0.

    The plane (z-c)=0 is parallel to the xy\text{-plane}.

    There are similar statement for the other coordinate planes.
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