If a=(5,2) and b=(-3,1) then which of the following vectors represent 3a-2b?
a) (9,4)
b) (9,8)
c) (21,8)
d) (21,4)
2 answers
what are your thoughts on this one?
3a = (15, 6). 2b = (-6, 2)
3a-2b = (15, 6)-(-6, 2) = (21, 4).
3a-2b = (15, 6)-(-6, 2) = (21, 4).