can you please give me some more information about this

We can see that the segment is defined by the points (-5, 5) & (-3, -4).
Now, we calculate the mid-point by using the following expression:
[tex]mp=(\frac{x_2-x_1}{2},\frac{y_2-y_2}{2})[/tex]So, now we replace:
[tex]mp=(\frac{-5-(-3)}{2},\frac{-4-5}{2})\Rightarrow mp=(-1,\frac{1}{2})[/tex]So, the mid point is (-1, 1/2).