PLEASE HELP!! I WANT A BETTER UNDERSTANDING
https://youtu. be/9Uc62CuQjc4 <- if needed

I believe that is a function.

Let's say you have a graph like this one. You make a straight line. It's considered a function.

You make another line on the graph a squiggly one. It's still considered a function.

You make another one on a different graph. This time a circle. It's not a function.

[The drawing above (ignore my terrible drawing skills.) shows what I mean by an invisible line.]

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!