Housing demand supply

hi all

My first econ class and it is already drivin me nuts. What does the 2006-08 housing look like in graph?

I read the demand was at its highest in 2006 and had the sharpest fall in 2008. So, shouldnt the demand curve of 2006 be up while 2008 down? Also, how was the price and the quantity in both years if you have any idea? From what I gathered, more demand means higher price. So shoulnt the supply and demand be parallel instead of inverse?

Please help with as much clear as possible. Functional graph wouldnt hurt too :p

Thanks