2.2. State the symmetry of this combined system. What coordinate system do you use, based on this symmetry?What directions can we move the charge distribution while still preserving the orientation/locations

of the source charges? Based on this, what direction is the electric field, and what is the only coordinate which this electric field can be a function of? (That is, what is the only direction that we need to move to consider evaluating the strength of the electric field). Update your diagram, or draw a new diagram, showing the direction of the electric field,given the symmetry considerations.