In 2-dimensional flow not rubbing, not compressed ( = 1100 kg / m 3 ), has a component velocity fields in m / sec as

In 2-dimensional flow not rubbing, not compressed (ρ = 1100 kg / m³), has a component velocity fields in m / sec as follows, u = Ay - Bx and v = Ax + By, ⃗g =g ^ k.
Coordinates are expressed in meters, and A = 2 s-1 and B = 4s-1. The pressure p0 = 150 kPa at the point (x, y) = (0, 0).
(a) Does this school fulfill the law of conservation of mass?
(b) Look for expressions for potential speed φ?
(c) Look for an expression for the pressure field p(x, y) and calculate the pressure on point (2,3)r