Three roads, a, b, and c, all run south to north. they each meet a highway that runs west to east. road b is 2.3 kmwestof road a. road c is 3.9 kmeastof road b. describe the location of road c with respect to road a.
road c is km of road a.

the answer is 1030 it's very simple math.

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.