11. As shown in Figure 3, the line $y=-2 x+6$ intersects the $x$-axis and $y$-axis at points $P$ and $Q$, respectively. If $\triangle P O Q$ is folded along $P Q$, point $O$ lands at point $R$. Then the coordinates of point $R$ are $\qquad$.
11. $\left(\frac{24}{5}, \frac{12}{5}\right)$.