Regarding Econ 101 homework

1 . Movements along versus shifts of demand and supply curves

The following two graphs depict the market for cereal.

On the first graph that follows, show the effect of a shift of the entire supply curve resulting from suppliers producing less cereal at every given price.

Note: Select and drag the curve to the desired position. The curve will snap into position, so if you try to move the curve and it snaps back to its original position, just drag it a little farther.

   

On the next graph, show the effect of a movement along a fixed supply curve that results from a decrease in the price of cereal, with every other factor held constant.

Now consider the market for lumber.

Complete the following table by indicating whether each event will cause a  movement along  the supply curve for lumber or a  shift  of the supply curve for lumber, holding all else constant.