Nour drove from the dead sea up to amman, and her altitude increased at a constant rate. when she began driving, her altitude was 400 meters below sea level. when she arrived in amman 2 hours later, her altitude was 1000 meters above sea level.
let a(t) denote nour's altitude relative to sea level a(measured in meters) as a function of time t (measured in hours).
write the function's formula.

If its non of them tell me..valerie took a day-trip. she drove from her house for a while and took a coffee break. after her coffee break, she continued driving. after  2  hours of driving after her coffee break, her distance from her house was  210  miles. her average speed during the whole trip was  60  miles per hour.valerie created the equation  y−210=60(x−2)  to represent this situation, where  xx  represents the time in hours from her coffee break and  yy  represents the distance in miles from her house.which graph correctly represents valerie's distance from her house after her coffee break?