Consecutive integers are integers that follow each other in order. for example, 4, 5, and 6, are
consecutive integers. given a number n, explain why the next two consecutive integers would be
represented by the expressions n+1 and n+2.

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.