1.
If the system of linear equations
8x+y+4z=−28x + y + 4z = -2

x+y+z=0x + y + z = 0

λx−3y=μ\lambda x - 3y = \mu

has infinitely many solutions, then the distance of the point (λ,μ,0)(\lambda, \mu, 0) from the plane 8x+y+4z+2=08x + y + 4z + 2 = 0 is: