State the law of Supply using the supply function

Here's the answer to part b) again.

b) State the law of Supply using the Supply Function.

The law of supply states that, all else being equal, as the price of a good or service increases, the quantity supplied will also increase, and vice versa. In the given supply function, $Q_s = 20P - 100$, the positive coefficient of $P$ (which is 20) indicates a direct relationship between price ($P$) and quantity supplied ($Q_s$), consistent with the law of supply.