Can the two lines of regression be parallel?

The two lines of regression meet at

State TRUE or FALSE: can the two lines of regression be perpendicular?

Find the regression coefficients b_(yx) and b_(xy) and the two lines of regression for the following data: {:(x,2,6,4,7,5),(y,8,8,5,6,2):}

If the line of regression are parallel to the coordinate axis, then the coefficient of correlation is

If the regression coefficients b_(xy)=1.6 and b_(yx)=0.4 , and theta is the angle between the two lines of regression, then the value of tantheta is

Find the equations of the two lines of regression for the following observations : (3, 6), (4, 5), (5, 4), (6,3), (7,2). Find the estimation of y for x = 2.5.

The two line of regression are perpendicular if

The two lines of regression for a bivariate distribution (X,Y) are 3 x + y = 7 and 3x + 5y = 11 . Find the regression coefficient b_(yx)

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 lines of regression are 3x - 2y+1 = 0 and 2x -y-2=0 , then bar x+bary is equal to: