What is boxed is what you put in your stat plot in your calculator (graphing). To find the y intercept you use the value function on your calculator (if you have a Ti-84 it’s 2nd-> trace-> 1) and enter 0. Yo find the x intercept you use the zero function on your calculator (if you have a Ti-84 it’s 2nd-> trace-> 2 and follow the instructions it asks). Hope this helps!