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The last one. Indeed : the couple (x,y) = (-3,2)
Lets replace the values :
2*(-3) + 4*2 = 2
-6 + 8 - 2 = -8 + 8 = 0
And -2*(-3) + 2*2 = 10
6+4 -10 = 10-10 = 0
Good Luck