Q: Which formula correctly calculates the slope of a straight line between two points $$(x_1$, y_1$)$$ and $$(x_2$, y_2$)$$?

$$ \text{slope} = \frac{y_2 - y_1}{x_2 - x_1} $$

Q: Refer to the demand curve for pizza. If the price decreases from $$14 to 12 $$and the quantity demanded increases from 55 to 65, what is the slope of the demand curve between these two points?

$$ \text{slope} = \frac{12 - 14}{65 - 55} = \frac{-2}{10} = -0.2 $$

Q: Suppose the area of a rectangle on a graph represents a firm's total revenue. If the price per unit is $2 and the quantity sold is 125,000 units, what is the total revenue?

$$ \text{Total Revenue} = 2 \times 125,000 = 250,000 $$

Question 1

Which of the following best describes the concept of scarcity in economics?

Accepted Answer

Scarcity means that resources are limited and cannot satisfy all human wants.

Question 2

According to economic theory, what is the opportunity cost of a government choosing to fund space exploration instead of cancer research?

Accepted Answer

The value of the cancer research that is forgone.

Question 3

Which of the following is an example of a marginal decision?

Accepted Answer

Deciding whether to study for one more hour or watch TV.

Question 4

A market economy is characterized by:

Accepted Answer

Decisions made by households and firms interacting in markets.

Question 5

Which formula correctly calculates the slope of a straight line between two points $$(x_1$, y_1$)$$ and $$(x_2$, y_2$)$$?

Accepted Answer

$$ 	ext{slope} = \frac{y_2 - y_1}{x_2 - x_1} $$

Question 6

Refer to the demand curve for pizza. If the price decreases from $$14 to 12 $$and the quantity demanded increases from 55 to 65, what is the slope of the demand curve between these two points?

Accepted Answer

$$ 	ext{slope} = \frac{12 - 14}{65 - 55} = \frac{-2}{10} = -0.2 $$

Question 7

Which of the following best explains why market economies tend to be more efficient than centrally planned economies?

Accepted Answer

Market economies promote productive and allocative efficiency through competition and voluntary exchange.

Question 8

If a government increases taxes to fund welfare programs, which economic trade-off is most directly involved?

Accepted Answer

The trade-off between efficiency and equity.

Question 9

Which of the following is an example of positive analysis?

Accepted Answer

Analyzing the effect of a minimum wage increase on unemployment rates.

Question 10

Suppose the area of a rectangle on a graph represents a firm's total revenue. If the price per unit is $2 and the quantity sold is 125,000 units, what is the total revenue?

Accepted Answer

$$ 	ext{Total Revenue} = 2 	imes 125,000 = 250,000 $$

Question 11

Which of the following best describes allocative efficiency?

Accepted Answer

Production is in accordance with consumer preferences, where marginal benefit equals marginal cost.

Question 12

A pie chart and a bar graph both show market share data for the PC market. What is a key difference in how these two graphs present the information?

Accepted Answer

A bar graph uses the height of bars, while a pie chart uses the size of slices to represent market share.

Question 13

If the price of hamburgers increases, what is likely to happen to the demand curve for pizza, assuming pizza and hamburgers are substitutes?

Accepted Answer

The demand curve for pizza will shift to the right.

Question 14

Which formula is used to calculate the percentage change in an economic variable from one period to the next?

Accepted Answer

$$ 	ext{Percentage Change} = \frac{	ext{New Value} - 	ext{Old Value}}{	ext{Old Value}} 	imes 100 $$

Question 15

Which of the following is a potential problem when using graphs to analyze economic relationships?

Accepted Answer

Graphs may suggest causality when only correlation exists.

Question 16

In the context of economic models, what is the role of assumptions?

Accepted Answer

Assumptions simplify reality to make models useful for analysis.

Question 17

Which of the following best describes the difference between microeconomics and macroeconomics?

Accepted Answer

Microeconomics studies individual households and firms, while macroeconomics studies the economy as a whole.

Question 18

If a firm’s total cost curve is nonlinear, how can you approximate the slope at a specific point?

Accepted Answer

By measuring the slope of the tangent line at that point.

Question 19

Which of the following is an example of a normative statement?

Accepted Answer

The government should provide free healthcare to all citizens.

Chapter 1: Foundations and Models in Microeconomics – Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards