A confined aquifer with a horizontal bed has a varying thickness. The aquifer is inhomogeneous with K = 12+0.006x, where x =0 at point 1, and the piezometric heads at point 1 and 2 are 14.2 m and 18.8 m, respectively measured above the upper confining layer. Assuming the flow in the aquifer is essentially horizontal,
a) determine the direction of the flow.
b) determine the flow rate per unit width of aquifer.