Question

On an airplane flight, Steve watched a display that showed the number of minutes since the flight took off and the number of miles away from the destination. He recorded various points and fit the line y = 2426 – 8x to the data, where x is the number of minutes flying and y is the number of miles from the destination. According to the model, how far was Steve from his destination after 120 minutes of flying?

Answer 1

The equation relating the number of minutes since the flight took off and the number of miles away from the destination is expressed as

y = 2426 - 8x

Given that x represents the number of minutes and y represents the number of miles from the destination, if he flew for 120 minutes, it means that x = 120. Thus, we would substitute x = 120 into the equation. It becomes

y = 2426 - 8 * 120

y = 2426 - 960

y = 1466

Steve is 1466 miles from his destination