Hello! The graph of each linear equation is a set of unconnected points. The thing is that with a solid line, you can have things in-between whole numbers. However, you can’t have a fraction of a movie. Dotted points show that you can’t have in between values and that only whole quantities count.
Answer: A proper subset is one that contains few elements of the original set whereas an improper subset, contains every element of the original set along with the null set.
