Demand Curve

http://www.google.com/imgres?num=10&um=1&hl=en&biw=1280&bih=890&tbm=isch&tbnid=e_-eLLyebcs1hM:&imgrefurl=http://www.triplepundit.com/2009/11/is-bottled-water-a-dead-man-walking/&docid=4FmDorDDdimkEM&imgurl=http://cdn6.triplepundit.com/wp-content/uploads/2009/11/bottled-water1.jpg&w=390&h=499&ei=TtppUJmNI8LFigK924HYBw&zoom=1&iact=rc&dur=0&sig=114659874107285353023&sqi=2&page=1&tbnh=125&tbnw=98&start=0&ndsp=29&ved=1t:429,r:1,s:0,i:146&tx=464&ty=402