Solution of the differential equation \(xdy-ydx=0\) represents1A rectangular hyperbola2Parabola whose vertex is at origin3Straight line passing through origin4A circle whose centre is at originAnswer & explanation+Correct answer: option 3\(\begin{aligned}\text{Given, }\frac{dy}{y}&=\frac{dx}{x}\\ y&=cx\end{aligned}\)