Use a direct-proportion model
A rainwater tank starts empty and fills at a constant rate
Let \(V\) be the volume of water in L, and \(t\) the filling time in minutes
Observed pair: \(t=11,\quad V=550\)
Fractional minutes are allowed
A rainwater tank starts empty and fills at a constant rate
Let \(V\) be the volume of water in L, and \(t\) the filling time in minutes
Observed pair: \(t=11,\quad V=550\)
Fractional minutes are allowed