I have the following differential equation:

(dy / dx) = (x* (1 - .5*x - .5*y) ) / (y* (-.25 + .5*x))

First, I would like to graph the solution to this equation with multiple initial conditions. For example, I would like to graph the solution with y(1) = 2, y(1) = 4, etc. Is this possible using the ODEplot command? If it is not possible using ODEplot, can you provide me with a command I can use and with sample code?