Respuesta :

(-3,2)
(-2, 1)
(-1, 0)  <-----
(0, -1)
(1, -2)

Midpoint is (-1, 0)
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Midpoint formula : Attached 

x,y 

-3 is X1 and  2 is Y1 

1 is X2 and -2 is Y2
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