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Parametric equation of line and equation of plane

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For the points P(1, 2, 1), Q(-2, 3, 1), and R(3, 0, -3):
1) Find the parametric equation for the line segment PQ.
2) Find the equation of the plane through P, Q, and R
3) Find the parametric equation for the line R normal to this plane.

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The solution explains how to find the parametric equation of the line and the equation of a plane passing through three points in 3-D coordinates.

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(3) Since the line is ...

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