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Mathematics 9 Online
OpenStudy (anonymous):

Find a vector equation and parametric equations for the line segment that joins P to Q. P(1,-1,6), Q(6,5,1)

OpenStudy (anonymous):

\[r(t)=(1-t)r0+tr\] why is (1-t) used? that confuses me.

OpenStudy (anonymous):

Just notice that at t=0, the vector points at r0, and at t= 1, the vector points at r.

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