Which city is the largest percent of people taking the train

new york

Step-by-step explanation:

it has the highest number

you need to give us more information since we can't answer

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.