Question 820075
2x+5y=11 
6x+4y=11
intersect  at
x = 1/2,   y = 2
6x+2y=-6 
8x-y=2
intersect  at
x = -1/11,   y = -30/11
I am not sure what you have. 
Are there two sets of two equations or one set of 4 equations?
None of them are parallel nor perpendicular. 
No three of them meet at any one point.