B.
Step-by-step explanation:
to find the midpoint the formula is
![( \frac{x2 + x1}{2} \frac{y2 + y1}{2} )](/tpl/images/0808/9383/d3b4d.png)
so use the points provided and substitute them in to the formula!!
(-4,-7) = (x1, y1) (5,6) = (x2, y2)
so now it would look like this inside the formula
and then you'll just solve that !!
![\frac{5 + ( - 4)}{2} = \frac{1}{2} = 0.5](/tpl/images/0808/9383/2f5ad.png)
so we know x = 0.5 now, solve for y
![\frac{6 + ( - 7)}{2} = \frac{ - 1}{2} = - 0.5](/tpl/images/0808/9383/14ce9.png)
and we now know y = -0.5
point form (x,y) and you're all done !!
and this is why the answer is B. (0.5, -0.5)