3x-y=-9, -3x-2y=0
The first equation can be re-arranged to y =3x+9 sub this into the second equation for 'y'
-3x -2 (3X+9) =0
-9X-18=0
X= -2
Now sub this value of x into one of the equations to find y
y=3x+9 y= 3(-2)+9 = 3
x,y = -2,3
+37084 
