a 11. The graph shows the altitude above sea level of a weather balloon over time. The trend line passes through the points (0,453) and (10,359). Which statements about the graph are true? The data show a positive correlation. The trend line is -9.4x - 453. Altitude (ft) In general, the balloon is losing altitude. 3 The weather balloon started its flight at about o 455 feet above sea level. 3 After 4 minutes, the weather balloon had an altitude of about 415 feet above sea level, After 395 minutes, the weather balloon had an altitude 0 of about 8 feet above sea level.