I know S is linearly dependent because the third vector is a combination of the first two.
Describe in words what the span S looks like geometrically?
I think it is...
The span S is a plane that contain the vectors and the zero vector.
Is this correct?
Find an implicit description for the span of S?
would this just be
after a bit of reading, above would the the explicit description of span s. The implicit description would be equation of the plane.