Question
If the two lines of regression are $2x - y - 4 = 0$ and $9x - 2y - 38 = 0$, then the means of the x and y variates respectively are:
If the two lines of regression are $2x - y - 4 = 0$ and $9x - 2y - 38 = 0$, then the means of the x and y variates respectively are: