Quiz I missed and Quiz I took today

Last Friday I was absent so I wasn't able to take the quiz that we had on demand. I ended up taking it yesterday but the weird thing was that I was confused yesterday because the supply and demand were getting confused in my head. But today, putting the two together helped me!!! I remembered that on a supply curve, if the line moves up its actually a decrease and if the line moves down its an increase. I was confused on my demand quiz (thankfully I still understood it) but now its like the heavens have opened and I understand! :D