Two airplanes are flying to the same airport. Their positions are shown in the graph. Write a system of linear equations that represents this situation. Two points marking the position of two airplanes and an airport on a coordinate plan. The position a red airplane is marked at 15 comma 9 and the position of a blue airplane is at ordered pair 2 comma 4. The position of the airport is marked at ordered pair 6 comma 12.

System of equations:

blue airplane: $y=$

red airplane: $y=$

Question 2
Justify your answer.