Answer:
we can test score by making some equations which us to test score so please do it
admins, pls delete this, I messed up and don't know how
The answer is 3 because 3 does not have the number 10 in it could also be 4,6,7,8,9
You can tell whether a relation is a function by plotting the numbers on a graph and applying the vertical line test. If no vertical line passing through the graph intersects it at more than one point, the relation is a function.