Me on what is meant by 2cm to represent 1unit on the graph and give me examples.

So it's a scale. On your graph, there should be units, or little squares made up of lines. For example, if you have a square that's one unit/line on each side, in real life it's going to be 2cm on each side. If you draw a square that's 4 lines/units on each side, it means that it's 8cm on each side, because that's 2cm for each little line.

yes, is a function

IT DONT REPEAT