That is the midpoint of of segment whose endpoints are (9, -9) and (-3, 7)?

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Answer 1 · 2016-12-14T05:42:38

#M(3;-1)#

The midpoint M of a segment AB,

where #A=(x_1;y_1); B=(x_2;y_2)#,

is given by the following formula:

#M((x_1+x_2)/2;(y_1+y_2)/2)#

Then, since #A=(9;-9); B=(-3;7)#,

#M=((9-3)/2;(-9+7)/2)#

#M(3;-1)#