i believe this has something to do with crossproducts.
for the part below use:
u= 8i +2j and v = 2i+j-k
find the area of the parallelogram formed by u and v
ok so that was the problem
i started it by trying to find the P, Q, and R.
i got P(8,2,0) Q(2,1,0) and R(0,-1,0)
are the points correct for P Q and R
i m kinda stuck here.