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I need to find the equation of this reflected line:

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    Use orthogonal projection matrices and reflection matrices. Hint: the orthogonal projection of a point $x$ onto a vector $v$ is $\frac{vv^T}{v^Tv}x$. The reflection of the point $x$ about the vector $v$ is $2\frac{vv^T}{v^Tv}x-x$.2011-09-24

3 Answers 3