Regression lines and correlation properties

Based on $10$ data points $(x_1, y_1), (x_2, y_2), \dots, (x_{10}, y_{10})$ on a variable $(X, Y)$, the simple regression lines of $Y$ on $X$ and $X$ on $Y$ are obtained as $2y-x=8$ and $y-x=-3$, respectively. Let $\bar{x}=\frac{1}{10}\sum_{i=1}^{10} x_i$ and $\bar{y}=\frac{1}{10}\sum_{i=1}^{10} y_i$. Then, which of the following statements is/are TRUE?