Question 1
What is the span of a set of vectors?
Question 2
Which vector is in the span of $(1,2)$?
Question 3
Which set spans $\mathbb{R}^2$?
Question 4
What is the span of the zero vector in $\mathbb{R}^2$?
Question 5
Is $(2,4)$ in the span of $(1,2)$?