Nour drove from the Dead Sea up to Amman, and her altitude increased at a constant rate. When she began driving, her altitude was 400400400 meters below sea level. When she arrived in Amman 222 hours later, her altitude was 100010001000 meters above sea level.
Let yyy represent Nour's altitude (in meters) relative to sea level after xxx hours.
Complete the equation for the relationship between the altitude and number of hours.