Question

what is a function and how do u tell the difference between one and something else? in my hw, there's these 3 graphs, all have a column for inputs and outputs and we have to point out which one or two represents a function...please help me! thank u so much!

Answer 1

I don't know what you might mean by "something else", but a function should be defined in your book. In short, if any x-value leads to two or more y-values, then whatever relation you have is not a function.

I can't see your graphs or columns or whatever, so I can't speak specifically to that. Sorry.