The coordinates of the center of a circle are (– 6, 1.5). If the ends of a diameter are (– 3, y) and (x, – 2) then………. A) x = – 9, y = 5 B) x = 5, y = – 9 C) x = 9, y = 5 D) x = –9, y = –5
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Answer:
coordinates of centre = (-6,1.5)
ends of diameter = (-3,y) ; (x,-2)
by section formula,
(-3 + x)/2 = -6
=> -3 + x= -12
=> x = -9
(y - 2)/2 = 1.5
=> y - 2 = 3
=> y = 5
so that,
answer is opt (a) x= -9 , y= 5
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