Answer: (-1/2,-5)
Explanation:
To find the midpoint of CD, we can substitute the given values in the midpoint formula.
[tex](\frac{x_{1}+x_{2} }{2} ,\frac{y_{1}+y_{2} }{2})[/tex]
[tex](\frac{1+(-2)}{2} ,\frac{-3+(-7)}{2} )\\\\(-\frac{1}{2},-\frac{10}{2} )[/tex]
[tex](-\frac{1}{2},-5)[/tex]