The slope of a regression line is given by $b = r \times \frac{s_y}{s_x}$, where $r$ is the correlation coefficient, $s_y$ is the standard deviation of y-values, and $s_x$ is the standard deviation of x-values. For a dataset with $r = 0.6$, $s_y = 10$, and $s_x = 5$, what is the slope?