English: This is the linear equation, $\frac{dx}{dy}$, in place of x, you have y, okay, linear equation how is it, earlier, $\frac{dy}{dx} + \ P(x)\ y = q(x)$, instead of x you have y now.
Telugu: అంటే ఈ $\frac{dy}{dx} + \ P(x)\ y = q(x)$ లో xకి బదులుగా ఇప్పుడు మీకు y ఉంది.