<u><em>Explanation:</em></u> <u>We are given that:</u> 1 kg = 2.2 pounds
To convert 44 pounds into kg, all we have to do is <u>cross multiplication</u> as follows: 1 kg .................> 2.2 pounds ?? kg .................> 44 pounds
The given formula above, y = -x, is a sample of a function. A function is an equation that would give only one value of y for every value of x. This is the same as saying that exactly one output is set by each input. If we take x = -1, the value of y is 1 and nothing else.