Question

If x+4y +3 = 0 and 4x+9y +5 = 0 be the two regression line, then the expectation of y is

Answer 1

Answer:

x+4y=-3_________(1)

4x+9y=-5________(2)

1और2से

4x+16y=-12

4x+9y=-5

- - +

__________

0 7y=-7

y=-1

yके मान समीकरण(1)मे रखने पर,

x+4×-1=-3

x+(-4)=-3

x-4=-3

x=-3+4

x=1

x=1, y=-1