Final answer:
The given equation, y = a/x + b, can be used to model the relationship between the length of the telescope barrel and the diameter of the Field of View (FOV). 'y' represents the FOV diameter, 'x' represents the length of the barrel, and 'a' and 'b' are constants.
Step-by-step explanation:
The equation provided, y = a/x + b, describes an inverse relationship between the length of the telescope barrel and the diameter of the Field of View (FOV). As the length of the barrel increases, the FOV diameter decreases. This equation allows us to model the relationship between the length and FOV data. In this equation, 'y' represents the FOV diameter, 'x' represents the length of the barrel, and 'a' and 'b' are constants. By analyzing the data graphically or numerically, you can determine the specific values for 'a' and 'b' that best fit the data.