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The given bar charts illustrate the cost of airline tickets between Sydney and Melbourne in Australia over a two-week period in 2013. e Overall, the cost of tickets from Sydney to Melbourne on Monday witnessed a delcine trend; similarly, the contrast line also recorded downward trends in terms of the price of tickets on Monday, Friday, and Saturday. Notably, Tuesday, Wednesday, and Thursday remained unchanged in both ways over the examined period. Furthermore, the costs in both lines are almost identical. Regarding the airline ticket from Sydney to Melbourne, Monday and Firday registered the highest price, standing at 80 dollars and 75 dollars respectively, in first week. Then, the cost on Monday plummeted to only 50 dollars, while Firday still remained stable. Followed those, the tickets cost 70 dollars on Saturday, compared to 50 dollars on Sunday, after that both days underwent no fluctuations. Meanwhile, Tuesday, Wednesday, and Thurday all stayed below or equal 40 dollars, which after their figures matched their pevious ones. Turning to the price of tickets in another line, Monday, Firday, and Saturday all underwent drops, with from 60 to 40 dollars, from 80 to 60 dollars, and from 60 to 50 dollars in that order. By contrast, the cost on Tuesday, Wednesday, and Thursday were equal, and leveled off in the following week. likewise, the figure for Sunday in both weeks stood at 50 dollars.