Answer: A
Explanation:
Given that y varies inversely with x, that is,
y ∝ 1/x
you will introduce constant k when the proportionality constant sign is changed to equality sign.
y = k(1/x)
when x = 28, y = 2
substitute x and y into the formula to get k
2 = k(1/28)
open the bracket and cross multiply
k = 56
substituting k back into equation gives
y = 56/x
option A should be the answer. but it wasn't written clearly