When it is raining outside, you tend to stay in and watch TV. The number of hours of TV that you watch in a given week is twice the number of rainy days in that week. In the table below, $y$ is the number of hours of TV you watch in a week, and $x$ is the number of rainy days in that week. The relationship between these two variables can be expressed by the following equation: $y=2x$. **Which of the following statements are true?** $x$ | $y$ :-:|:-: $1$ | $2$ $2$ | $4$ $3$ | $6$ $4$ | $8$ [[☃ radio 1]]