Answer:
Step-by-step explanation:
A(x1,y1) B(x2,y2)
M(x,y) => x=[tex]\frac{x1+x2}{2}[/tex] and y=[tex]\frac{y1+y2}{2}[/tex]
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A(15,-11) B(-10,10)
M([tex]\frac{15-10}{2}[/tex],[tex]\frac{-11+10}{2}[/tex])=([tex]-\frac{5}{2}[/tex],[tex]-\frac{1}{2}[/tex])
