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Precalculus 9 Online
OpenStudy (anonymous):

Determine whether the vectors u and v are parallel, orthogonal, or neither. u = <7, 2>, v = <21, 6>

geerky42 (geerky42):

since both are at first quadrant, it cannot be orthogonal.

geerky42 (geerky42):

Vector V looks like it can be factored out

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