# Derive the market demand function and market supply function

In the second page of this paper Gjerstad et al derive the market demand and the supply for assets using the data shown in Table 1.

The table is

The demand function they find is $$Q = 94 – 0.4 P$$ and the supply function is $$Q = P/15 – 1$$

I cannot understand how the functional form they find relates to the data in the table: can someone help me understand how do they derived it?

• Can you please make the question more self-contained? May 12 at 15:50
• @Giskard Am I allowed to include the relevant parts of the paper in the question? May 12 at 15:52
• Not sure what you mean - allowed by whom? I specifically ask you to do so. May 12 at 16:22