Question

Find the coordinates for M, the midpoint of (line segment AB. A(-9,-4); B(1,6); M=???

Answer 1

The midpoint most be the same as to take the line segment AB and divide it with two:
\[M=\frac{ x _{1}+x _{2} }{ 2 },\frac{ y _{1}+y _{2} }{ 2 }\]
You can use the equation is true using vector calculus.