Let \( y=y_{1}(x) \) and \( y=y_{2}(x) \) be two distinct solutions of the differential equation \( \dfrac{dy}{dx}=x+y \) with \( y_{1}(0)=0 \) and \( y_{2}(0)=1 \) respectively. Then, the number of points of intersection of \( y=y_{1}(x) \) and \( y=y_{2}(x) \) is:
