Distance Midpoints in the Complex Plane Practice Test

Let $z_1=-6+4i$ and $z_2=2-2i$ be points on the complex plane. Using the midpoint formula $$\frac{z_1+z_2}{2}=\left(\frac{a+c}{2}\right)+\left(\frac{b+d}{2}\right)i,$$ what is the midpoint of the segment joining $z_1$ and $z_2$?

Treat $z=a+bi$ as the point $(a,b)$ on the complex plane. Using the midpoint formula

$$\frac{z_1+z_2}{2}=\frac{a+c}{2}+\frac{b+d}{2}i,$$

what is the midpoint of the segment joining $z_1=-1+3i$ and $z_2=5+i$?