Question 43568
x  |  y
-3    15  y=-3*-3-2*-3 or 9+6=15
-2    8   y=-2*-2-2*-2 or 4+4=8
-1    3   y=-1*-1-2*-1 or 1+2=3
0     0   y=0*0-2*0 or 0-0=0 
1    -1   y=1*1-2*1 or 1-2=-1