The equation of the pair of lines joining the origin to the points of intersection of `x^2+y^2=9 and x+y=3`, is
A
`x^2+(3-y)^2=9`
B
`(3+y)^2+y^2=9`
C
`x^2-y^2=9`
D
`xy=0`
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The correct Answer is:
D
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