A plane flies along the line 3x - y = 18. The airspace of its enemy country is determined by the curve y = x2 - 8x +12. If the aircraft flies through this airspace, it will be detected by radar and will be shot down. If it does not cross the airspace or just touches the edge of the airspace, it escapes detection and will not be shot down. If the plane were flying along this route, would you advise the pilot to change direction? Give a reason for your answer.​