A businesswoman needs to fly to Bulgaria for a conference. She watches the prices for flights and records the prices each Monday on the graph below.
The x-axis (horizontal) shows the number of weeks leading up to the flight. Therefore, if x = 5, it means that the flight is in 5 weeks. If x = 10, the flight is in ten weeks, and so on.
Which of the following is affecting the price of the ticket in the graph above?

Question

A businesswoman needs to fly to Bulgaria for a conference. She watches the prices for flights and records the prices each Monday on the graph below.
 The x-axis (horizontal) shows the number of weeks leading up to the flight. Therefore, if x = 5, it means that the flight is in 5 weeks. If x = 10, the flight is in ten weeks, and so on.
Which of the following is affecting the price of the ticket in the graph above?

Quizplus · Accepted Answer

The graph only uses time until departure as a factor in the price of a flight.
The graph does not compare which days of the week you can purchase the tickets.
The person only recorded data on Mondays so we have no comparison to other days of the week. The graph does not compare different days of the week.
We also have no comparison to other destinations. The person only recorded data for one destination. The person did not look at the impact of different destinations on the price of the ticket.
Even though the number of seats is affected by the number of weeks until the flight, this is not what the person used as a variable that affected the price of the ticket.

A Businesswoman Needs to Fly to Bulgaria for a Conference