Let h= spam{u,v} For each of the following sets of vectors, determine whether h is a line or a plane:
a) {u,v}={(1,2),(3,4)}
b) {u,v}={(1,2,3),(4,5,6)}
c) {u,v}={(1,2,3),(0,0,0)}
d) {u,v}={(1,2),(2,4)}