1. Let v1 = [-3; 3; -4], v2 = [3; -2; 8] and y = [-12; 9; h]

For what value of is in the plane spanned by and ?

2. Which of the following sets are subspaces of ?

A.

B.arbitrary number

C.arbitrary number

D.arbitrary number

E.

F.

Check all that apply.

Sort of desperate for help

Thanks in advance!