Double Data Trouble IV

Suppose that you run linear regression on some dataset and obtain an $R^2$ value of $0.48$. If you were to run linear regression again on the dataset where you double all of the values of each point in the dataset $($for example, if $(2,5)$ were in the original dataset, it would now be $(4,10)$ $)$, what would $R^2$ be? If it can't be determined, enter $-1$.