The midpoint of AB is M(7,-7). If the coordinates of A are (8,-6), whatare the coordinates of B?
+14915 The midpoint of AB is M(7,-7). If the coordinates of A are (8,-6), whatare the coordinates of B?
Hello Guest!
\(m=\frac{y_A-y_M}{x_A-x_M}=\frac{-6+7}{8-7}=1\)
\(m=1\)
\({\color{blue}y=m(x-x_M)+y_M}=1(x-7)-7\) (Point-direction equation)
\(x_A-x_M=8-7=1\)
\(x_A-x_M=1\)
\(x_B=x_M-(x_A-x_M)=7-1=6\)
\(x_B=6\)
\(f(6)=6-14=-8\)
\(y_B=-8\)
The coordinates of B are (6, -8)
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