$(20$ pts$)$ A steady, incompressible, two$-$dimensional velocity field is given by the following components in the xy$-$plane: $,u=1\mathrm{.}1+2\mathrm{.}8x+0\mathrm{.}65y,v=0\mathrm{.}98-2\mathrm{.}1x-2\mathrm{.}8y$

Calculate the acceleration field. Calculate the equation for streamlines and plot several of them. Is this flow incompressible or irrotational?