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Answer:
x1 = -4, y1 = 3, x2 = -6, y2 = 5
x1 + x2/2, y1 + y2/2
-4+(-6)/2 , 3+5/2
-4-6/2, 3+5/2
-10/2, 8/2
m=(-5,4)
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