How do I describe the given question "fully"????

Question

"What happens to y when x is doubled in y=k/x²" ?????? Here k=120

N.B: I was given this question in my O levels Mock. Please help.

Answer 1

y_old = (120)/x^2

vs

y_new = (120)/(2x)^2 = (120)/(4x^2) = (1/4) [ 120/x^2 ] = (1/4) ( y_old)

y decreases by a factor of 4