9. Find the midpoint of the segment having endpoints (2.9,−4.4) and (4.4,−2.9).

Answer:
midpoint: (3.65, -3.65)
Explanation:
[tex]\sf (x_m, y_m) = (\dfrac{x_1+x_2}{2}, \dfrac{y_1+y_2}{2})[/tex]
where (x1, y1), (x2, y2) are points
[tex]\rightarrow \sf (\dfrac{2.9+4.4}{2}, \dfrac{-4.4-2.9}{2})[/tex]
[tex]\rightarrow \sf (\dfrac{7.3}{2}, \dfrac{-7.3}{2})[/tex]
[tex]\rightarrow \sf (3.65, \ - 3.65)[/tex]