M is the midpoint of segment AB. The coordinates of A are (2,3) and the coordinates of M are (4.5,6). Find the coordinates of B.
A. (9,18)
B. (7,9)
C. (3.25,4.5)
D. (2.5,1.5)
Use the midpoint formula and solve for the missing value:(x,y)=((x1+x2)/2,(y1+y2)/2)
(4.5,6)=((2+x2)/2,(3+y2)/2)
4.5=(2+x2)/2 and 9=2+x2 and 7=x2
6=(3+y2)/2 and 12=3+y2 and 9=y2