Final answer:
The graph should be labeled with years from 1980 to 2023 on the x-axis, annotate the recession years, and titled 'Automobile Sales During Recession'. The appearance of data can be significantly altered by stretches and adjustments to the axes.
Step-by-step explanation:
When you're creating a graph to analyze automobile sales during periods of economic recession, it is important to properly label the x-axis with the years and to annotate the years of recession. In this case, we'd mark the x-axis with every year from 1980 until 2023. Major recessions, according to the provided data, happened in the years 1970, 1974, 1981, 1983, 2008, and 2020. An appropriate way to highlight these periods on your graph would be by using annotations directly on the years. For instance, placing an annotation at the data points for 2008 and 2020 would highlight the automobile sales during these recession years. Remember to give your graph a descriptive title such as 'Automobile Sales During Recession'. Additionally, you might consider the scale of your axis carefully to convey the right message, as stretching the axes can change the visual impact of your data.