# Budget Constraint, Opportunity Cost, & Law of Diminishing Marginal Utility | Summary and Q&A

25.0K views
May 18, 2020
by
The Organic Chemistry Tutor
Budget Constraint, Opportunity Cost, & Law of Diminishing Marginal Utility

## TL;DR

This video explains budget constraints and opportunity costs using an example problem, and explores the concept of diminishing marginal utility.

## Questions & Answers

### Q: What does the slope of the budget constraint graph represent?

The slope represents the opportunity cost of acquiring an additional item on the x-axis. In this case, it represents the opportunity cost of purchasing an additional train ticket.

### Q: What is the law of diminishing marginal utility?

The law states that as you consume more of a particular item, the satisfaction or utility from each additional unit decreases. This means that as you purchase more cheeseburgers or train tickets, the marginal utility of each additional item decreases.

### Q: How does changing the price of coffee or sandwiches affect the budget constraint graph?

If the price of coffee increases, the budget constraint line rotates counterclockwise around the x-intercept. If the price decreases, the line rotates clockwise. For sandwiches, if the price increases, the line rotates clockwise, and if it decreases, the line rotates counterclockwise.

### Q: How does increasing or decreasing the budget affect the budget constraint graph?

Increasing the budget expands the budget constraint line outward, represented by an extension of the y and x-intercepts. Decreasing the budget contracts the line inward, reducing the y and x-intercepts.

## Summary & Key Takeaways

• The video discusses budget constraints and their representation on a graph using the example of Lisa's budget for food and transportation.

• It explains how to calculate the maximum number of cheeseburgers and train tickets she can buy within her budget.

• The video shows how to create a budget constraint graph by connecting the points representing the maximum quantities of cheeseburgers and train tickets.

• It introduces the concept of opportunity costs and explains that the slope of the budget constraint graph represents the opportunity cost of acquiring an additional item on the x-axis.

• The video demonstrates how to create a budget constraint table and graph using the equation for the budget allocation between two items.

• It explores the effect of changing prices and budgets on the shape and rotation of the budget constraint graph.

• The video discusses the concept of diminishing marginal utility and how it applies to the purchase of additional cheeseburgers and train tickets.

## Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on:

## Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on: