Determine whether the formula describes y as a function of x. explain your reasoning.. y = -x

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. 

Quartile are numbers used to divide a set of data into four equal parts or quarter

Think of it as five or above give it a shove. change the 5 or above to the right to a zero and add one to the number on the left.