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[" The straight lines "(x)/(a)-(y)/(b)=k...

[" The straight lines "(x)/(a)-(y)/(b)=k" and "(x)/(a)+(y)/(b)=(1)/(k),k!=0" meet on "],[[" (a) a parabola "," (b) an ellipse "],[" (c) a hyperbola "," (d) a circle "]]

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