Answer:
In The Outsiders, sunrise and sunset are symbols of unity and connection. For example, when Ponyboy connects with Cherry at the movies on the topic of sunsets, he begins to realize that all humans are linked through the natural world.
Finally, the book ends using the exact words that it began with. This is a symbol of the journey that Ponyboy has been on. It shows that he was able to work through all of the destruction that occurred throughout the story. It provides symmetry in the novel as well.
It introduces the relationship between two variables and is called correlation. Proportionality or variation is state of relationship or correlation between two variables It has two types: direct variation or proportion which states both variables are positively correlation. It is when both the variables increase or decrease together. On the contrary, indirect variation or proportion indicates negative relationship or correlation. Elaborately, the opposite of what happens to direct variation. One increases with the other variables, you got it, decreases. This correlations are important to consider because you can determine and identify how two variables relates with one another. Notice x = y (direct), y=1/x (indirect)