SOLUTION: Determine whether the vectors u and v are parallel, orthogonal, or neither. u = <6, -2>, v = <2, 6>

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Question 1089496: Determine whether the vectors u and v are parallel, orthogonal, or neither.
u = <6, -2>, v = <2, 6>
Found 2 solutions by Fombitz, ikleyn:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Parallel they would have the same unit vectors.
Divide both by the magnitude sqrt%2836%2B4%29=sqrt%2840%29
Clearly they're not parallel.
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Orthogonal means dot product equals zero.
u%2Av=6%282%29%2B%28-2%29%286%29=12-12=0
They are orthogonal.

Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.
See the lessons
    - Dot-product of vectors in a coordinate plane and the angle between two vectors
    - Perpendicular vectors in a coordinate plane
    - Solved problems on Dot-product of vectors and the angle between two vectors
in this site.


Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic  "Dot-product for vectors in a coordinate plane".