What you think it means to be "rich"

What my option is to being rich is that you or the person has enough wealth to sustain his/her goals and lifestyle choices. Being rich allows you to buy the things you want and need without risking you financial future. Being rich allows you to live in comfort.

Explanation:

may i see the historical information and the excerpt?

. 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.