Posted by Anonymous on Friday, March 14, 2008 at 11:56am.
Find parametric equations for the line that passes through the point (0, 1, 1) and the midpoint of the line segment from (2, 3, 2) to (4, 1, 5).
I don't know how to solve this problem.

Discrete Math: Equations of a Line  Reiny, Friday, March 14, 2008 at 3:14pm
let M be the midpoint
then M =(3,1,3/2)
then a direction vector of the line is
[30,1+1,3/21] = [3,2,1/2] or [6,4,1}
possible parametric equations:
x = 0 + 6t
y = 1 + 4t
z = 1 + t
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