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Equation of the circle with centre on the y-axis and passing through the origin and the point (2, 3) is
A. x2 + y2 + 13y = 0
B. 3x2 + 3y2 + 13x + 3 = 0
C. 6x2 + 6y2 – 13x = 0
D. x2 + y2 +13x +3 = 0

Answers (1)

Centre of the circle lies on the y axis   

So, let the centre be C(0,k) 

 Circle passes through O(0,0)and A(2,3)

OC2=AC2

k2=(2-0)2+(3-k)2

k=13/6

(x-0)2+(y-13/6)2=(13/6)2

3x2+3y2-13y=0

Answer- None 

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