Write your name on your response sheet. Explain your answers in as much detail as possible. Check your examples and results. You need to explain every step of your logic, development andcalculation. No credit will be given without the intermediate steps or the explanations. Please readall questions before you start your answers. Let
A= [1 2 2 2]
[2 5 5 7]
[3 6 6 6]

1. Find all possible solutions of the homogeneous system Ax = 0.
2. Find all possible solutions of Ax = 6, where

[3]
b = [7]
[9]