In order to interpret that function, first, we have to construct it. It takes [tex]t= \frac{2000}{900} = \frac{20}{9} [/tex] hours for the plane to travel with no wind. When speed increases because of a tailwind, time decreases accordingly. So that, time is now equal to [tex]t= \frac{2000}{900+x} [/tex]. A general formula for time is [tex]t(x)= \frac{2000}{900+x} [/tex]
Interpretation of the y-intercept is that when x=0, it is the case of without tailwind when it takes [tex]t= \frac{20}{9} [/tex] hours to complete the travel
