Final answer:
The demand for hamburgers could be affected by the increased prices of a substitute (hot dogs) and a complement (hamburger buns) in opposite ways. Without knowing the relative magnitude of these changes, we cannot predict the exact effect on demand. An illustrative graph would show two potential shifts of the demand curve but the actual direction would depend on consumer responses to the price changes.
Step-by-step explanation:
Impact on the Demand for Hamburgers
Considering the price changes of substitute and complement goods, such as hot dogs and hamburger buns, can have conflicting effects on the demand for hamburgers. An increase in the price of a substitute good like hot dogs would normally lead to an increase in the demand for hamburgers because consumers switch to hamburgers as a less expensive alternative. Conversely, an increase in the price of a complement good, like hamburger buns, can lead to a decrease in the demand for hamburgers because the overall cost of consuming hamburgers has gone up.
The effects on the demand for hamburgers cannot be determined with certainty without knowing the magnitude of the price changes and how consumers prioritize these goods. The demand could increase, decrease, or even stay the same depending on the relative importance of the changes in prices of substitutes and complements to consumers.
Demand Curve Illustration
To illustrate this situation on a graph, it's helpful to plot two demand curves for hamburgers. Start with a standard downward-sloping demand curve. Then, to represent an increase in demand due to the more expensive substitute (hot dogs), we would shift the original demand curve to the right. Alternatively, to illustrate the decrease in demand due to the more expensive complement (hamburger buns), we would shift the demand curve to the left. Because we are considering both effects, the actual change in the demand curve could be a shift in either direction or no shift at all if the effects cancel each other out.