Question

Can someone help me? I've done most of it, I just need help with these.

Solve the system by using a table.
{-0.2x-0.3y=0.2
{0.4-0.3y = 1.4
Ans: (2,-2)

Solve the system using an equivalent system.
{-2x-y = 0
{3x -y = 10
Ans: (4,-2)

What is the solution of the following system?
{-2x-y =1
{-4x-2y =-1
Ans: (no solutions)

7. Solve the inequality by graphing.
{y>=2
{y>|x-1|
Ans: I have the answer, I just don't know which parts are suppose to be shaded.