PLS HelP me ELA edginuty

because he is using a description to provide evidence to support his argument.

hope this could

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.

by explaining that it took the same total time to travel by plane as it did by train