This week we learned the difference between a relation and function. We learned that a function is when the imput only has one output. However a relation is when an imput has multiple outputs. This can be viewed on a graph and on a mapping diagram. On a mapping diagram you are aware of this due to the imput connects to either one number or multiple numbers. On a graph you’re able to see it by doing a vertical line test, if the there are two lines touching either then it is a function.