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Point M is the midpoint of line segment AB, shown below.
What are the coordinates of point M?
A(2,15)
B (18,9)

Answer 1

`~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ A(\stackrel{x_1}{2}~,~\stackrel{y_1}{15})\qquad B(\stackrel{x_2}{18}~,~\stackrel{y_2}{9}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{ 18 +2}{2}~~~ ,~~~ \cfrac{ 9 +15}{2} \right) \implies \left(\cfrac{ 20 }{2}~~~ ,~~~ \cfrac{ 24 }{2} \right)\implies \stackrel{ \textit{\LARGE M} }{(10~~,~~12)}`