Relax

Respuesta :

Answer:

B(-5, -5)

Step-by-step explanation:

midpoint((x1 + x2)/2, (y1 + y2)/2)

x-coordinate:

(3 + x)/2 = -1

3 + x = -2

x = -5

y-coordinate:

(-1 + y)/2 = -3

-1 + y = -6

y = -5

B(-5, -5)