Question

Equations of two lines of regression are 4x+3y+7 = 0 and 3x+ 4y + 8 = 0, the mean of x and y are
(a) 5/7 and 6/7
(b) – 4/7 and –11/7
(c) 2 and 4
(d) None of these

Answer 1

4x+3y+7=0,3x+4y+8=0.the mean of x and y. are -4/7and-11/7