Linear Combination Definition Problem I am new to linear algebra stuff and stuck at this problem right now. ![enter image description here]( It seems like a new user is not allowed to post the image directly. Sorry for the inconvenience. My understanding for this problem is that BCDEF are all correct since they are essentially just in a format of $au + bv$, which apparently are wrong. Can someone explain this to me? Thanks!

Since $u,v$ are linearly independent vectors they form a basis and span the space $\mathbb R^2$

a) is true.

b,c,d,e,f) are all vectors in $\mathbb R^2,$ which means that they must also be true.