Question

if 'x' divides 'y' , then 'y' is a multiple of x.

Answer 1

Answer:

We say that x divides y, or y is divisible by x, and write x | y, if there exists an integer z such that xz = y. (We also say x is a divisor of y and y is a multiple of x.) It's obvious that 1 | x for any integer x, and if x ≠ 0, then x | 0 and x | x.