If the two means of regression are 4x+3y+7=0 and 3x+4y+8=0, then find the means of x and y.

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

If the two regression lines are 4x + 3y + 7 - 0 and 3x + 4y + 8 = 0. Find mean of x and y.

From the equation of the two lines, 4x + 3y +7=0 and 3x + 4y +8=0 , Find the mean of x and y .

If two lines of regression are 4x + 2y - 3=0 and 3x + 6y + 5 = 0 , then find the correlation coefficient.

If the two lines of regression are 4x-5y+33=0and20x-9y-107=0 , find the variance of y when sigma_(x)=3 .

The equations of the two lines of regression are 6x + y− 31 = 0 and 3x + 2y− 26=0 . Calculate the mean values of x and y .

For the lines of regression 4x-2y=4and2x-3y+6=0 , find the mean of 'x' and the mean of 'y'.