Answer:
-1/2,0
Step-by-step explanation:
Formula of midpoint is( x1+x2/2 , y1+y2/2)
From the given,
x1 =2 y1=1
x2=-3. y2=-1
substitute this in the formula
2+(-3)/2, 1+(-1)/2
=2-3/2, 1-1/2
=-1/2,0