which of the following represents producer surplus? in this graph, the y-axis is price and the x-axis is quantity. there are two curving lines representing supply and demand. the supply curve curves up as it goes right, while the demand curves curves down as it goes right. the point where these two lines intersect is equilibrium. there is a horizontal dotted line going from the equilibrium point to the y-axis, and this line represents market price. the region above the market price line and below the demand curve is labeled a. the region below the market price line and above the supply curve is labeled b. there is also a vertical dotted line extending from the equilibrium point to the x-axis, and this line represents equilibrium quantity question 28 options: a) b a b) b-a c) b d) a.