Answer:
the price of the product
Explanation:
because it is what it is
The vertical axis of a demand curve shows the price of a product.
The demand curve is a graph that depicts the relationship between price and quantity demanded of a good. The demand curve is negatively sloped because the higher the price, the lower the quantity demanded.
On the vertical axis, the price of the good is shown and on the horizontal axis, the quantity demanded is shown.
Please find attached a diagram of the demand curve. To learn more about the demand curve, please check: https://brainly.com/question/25140811