(i) Find the range of values of k for which the equation
x^2-4x+k=5kx-4 has real roots
(ii) Hence, deduce, giving a reason, the relationship about the curve
y=(x-1)^2 and the line y=-5x-4
I've solved part (i), the range is k>=0 or k<= -36/25
I can't deduce the relationship for part (ii). Can anyone help??