Asked by Jacobic
Point M(3,7) is the midpoint of a line over AB. If point A has coordinates (9,3), what is the sum of the coordinates of point B?
Answers
Answered by
Steve
M + (M-A) = B
(3,7)+(3-9,7-3) = (3,7)+(-6,4) = (-3,11)
-3+11 = 8
(3,7)+(3-9,7-3) = (3,7)+(-6,4) = (-3,11)
-3+11 = 8
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