Graph each system of inequalities then find the coordinates of the vertices of the feasible region.

1.) -2x-3y<=6

x-y<=2

y<=2

2.) x+y>=2

4y<=x+8

y>=2x-5

3.) x - 2y>=6

x>=0, y>=x

y<=x+3

4.) y+2x>=6

2<=x<=5

y>=0