Hi, can anyone help me with this question?

Let A=

[2 2 6]

[-3 2 4]

[5 -2 8]

Determine whether each the following vectors is in the column space of A, the null space of A, or neither.

1.

[8]

[-9]

[7]

2.

[2]

[-8]

[12]

3.

[-2]

[-6]

[-5]

4.

[-4]

[-2]

[2]

How can you tell? Thanks!