Question

Plz help
Asppp......

Answer 1

it is 7

Explanation:

Given points are the same, so midpoint also will be the same:

`M_(AB)=\left(\frac{x_A+x_B}2\,,\ \frac{y_A+y_B}2\right)=\left(\frac{9+9}2\,,\ \frac{7+7}2\right)=\left(9\,,\ 7\right)\\\\x_M=9\,,\quad y_M=7`