Homework Help: PreCal

Posted by Sam on Wednesday, September 14, 2011 at 12:43am.

A triangular prism has vertices at A(2, 0, 0), B(2, 1, 3), C(2, 2, 0), D(0, 0, 0), E(0, 1, 3), and F(0, 2, 0).

Which image point has the coordinates (1, 4, 3) after a translation using the vector 1, 2, 3?

What point represents a reflection of B over the xy-plane?
B'( )

PreCal - Reiny, Wednesday, September 14, 2011 at 9:38am
let the original point be reached by the vector (a,b,c)
then
(a,b,c) + (1,2,3) = (1,4,3)
by mental arithmetic
(a,b,c) = (0,2,0)

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