Question

Point M is the midpoint of AB. The coordinates of point A are (−6, 1) and the coordinates of M are (−4, 1). What are the coordinates of point B?

Answer 1

Let the point of A be (x,y)Then, (2x−4,2y+19)=(2,8)2x−4=2,2y+19=8x=8,y=−3So, the point A is (8,−3)(b) Let the point B be (x,y)Then, (2x−1,2y+2)=(−2,4)2x−1=−2,2y+2=4x=−3,y=6So, point B is (−3,6)

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