Although the two graphs show the same values, due to the different vertical scale used in the graph A (each vertical square represents 150 cars sold) and graph B (each vertical square represents 300 cars sold), maintaining the same horizontal scale (each horizontal square represents 1 month), the number of gas-fueled cars sold seems to decrease more in the graph A (approximately two and a half squares) than in the graph B (approximately 1 square and quarter)
Answers:
To emphasize the decrease in the number of gas-fueled cars sold, it would be best for Roger to use Graph A for his presentation.
Roger should use this graph for his presentation because the number of gas-fueled cars sold appears to decrease more on this graph.
