Answer:
Decrease price and affect the equilibrium quantity in an indeterminate way.
Explanation:
When there is a fall in the demand for a particular product then as a result there is a leftward shift in the demand curve for this product. On the other hand, if there is an increase in the supply of a product then as a result there is a rightward shift in the supply curve of this product.
Hence, there is a fall in the equilibrium price level and the effect on equilibrium quantity is indeterminate because we don't know the magnitude of the shifts of demand and supply curve.