Final answer:
A negative slope means that two variables are negatively related; when one increases, the other decreases. As the line on a graph with a negative slope moves from left to right, the line falls.
Step-by-step explanation:
A negative slope means that two variables are negatively related; that is, when x increases, y decreases, or when x decreases, y increases. Graphically, a negative slope means that, as the line on the line graph moves from left to right, the line falls. We will learn that price and quantity demanded have a negative relationship; that is, consumers will purchase less when the price is higher.