The following ordered pairs represent a function. (-2,-1), (-1,0), (0,1), (1,2), (2,3)

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

Can any one me with the answers to these questions asap?