Can anyone help me with this and explain it too?

Answer:
(6, 3)
Step-by-step explanation:
[tex]Midpoint (x_{m},y_{m})=(\frac{x_A + x_B}{2}, \frac{y_A + y_B}{2})\\\\=(\frac{3 + 9}{2}, \frac{6 + 0}{2})\\\\=(\frac{12}{2}, \frac{6}{2})\\\\Midpoint of a line segment (x_M, y_M) = (6, 3)[/tex]
How to Calculate Midpoint?
The x-coordinate of the midpoint M of the segment [tex]\overline{AB}[/tex] is the arithmetic mean of the x-coordinates of the endpoints of the segment [tex]\overline{AB}[/tex]. Similarly, the y-coordinate of the midpoint M of the segment [tex]\overline{AB}[/tex] is the arithmetic mean of the y-coordinates of the endpoints of the segment [tex]\overline{AB}[/tex].