how to graph and calculate this questions

Q1. Construct a Demand Curve for a 'Normal' Good from a Budget Constraint; and from this Demand Curve produce the corresponding Marginal Revenue Curves for each of the following market structures:

(a) Perfectly Price Discriminating Monopoly; (b) Simple Monopoly; and (c) Pure Competition.

Rank the above three markets from the largest to smallest quantity produced and consumed, given the same cost structure (supply curve) for each market?

Q2. In a world of 'rational' consumers and only two goods X and Y.

(a) Can both X and Y be 'Normal' Goods?; (b) Can both X and Y be 'Inferior' Goods?

Show a graph of each scenario and explain your position on (a) and (b).