The coordinate of the midpoint M is - 2
The endpoints of ST = - 6 and 2
The midpoint M, can be obtained using the relation :
M = (x1 + x2) / 2
The endpoints x1 = -6 and x2 = 2
Hence, M = (-6 + 2) / 2
M = - 4 / 2
M = - 2
The midpoint is - 2
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