Q: Which formula correctly calculates the slope of a straight line on a graph?

$$\text{Slope} = \frac{\Delta y}{\Delta x}$$

Question 1

Which of the following best describes the concept of opportunity cost?

Accepted Answer

The highest-valued alternative that must be given up to engage in an activity.

Question 2

Suppose a firm can produce a product using either more labor and less capital, or more capital and less labor. If the wage rate rises, what is the most likely response according to economic theory?

Accepted Answer

The firm will switch to a production method that uses more capital and less labor.

Question 3

Which of the following is an example of a positive economic statement?

Accepted Answer

"Raising the minimum wage will lead to higher unemployment among teenagers."

Question 4

A market economy is characterized by:

Accepted Answer

Decisions of households and firms interacting in markets determining resource allocation.

Question 5

If the marginal benefit of watching an extra hour of TV is less than the marginal cost, a rational person will:

Accepted Answer

Not watch the extra hour of TV.

Question 6

Which formula correctly calculates the slope of a straight line on a graph?

Accepted Answer

$$	ext{Slope} = \frac{\Delta y}{\Delta x}$$

Question 7

A voluntary exchange between a buyer and a seller in a market:

Accepted Answer

Makes both the buyer and seller better off.

Question 8

Which of the following is most likely to be a normative statement?

Accepted Answer

"The government should provide free healthcare to all citizens."

Question 9

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

Accepted Answer

$$\frac{-2}{10} = -0.2$$

Question 10

Which of the following best describes allocative efficiency?

Accepted Answer

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

Question 11

A government policy that unintentionally gives colleges an incentive to increase tuition is an example of:

Accepted Answer

An unintended consequence due to changing economic incentives.

Question 12

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

$$250,000$$

Question 13

Which of the following is NOT a step in building an economic model?

Accepted Answer

Ignore the results of statistical analysis.

Question 14

If a time-series graph has a truncated vertical axis, what is a potential risk when interpreting the data?

Accepted Answer

The fluctuations in the data may appear larger than they actually are.

Question 15

Which of the following best illustrates the concept of a trade-off?

Accepted Answer

A government increases spending on healthcare, resulting in less funding for education.

Question 16

Which of the following is a correct formula for calculating percentage change?

Accepted Answer

$$	ext{Percentage change} = \frac{	ext{New value} - 	ext{Old value}}{	ext{Old value}} 	imes 100$$

Question 17

Which of the following is an example of a real-world application of marginal analysis?

Accepted Answer

A company decides whether to hire an additional worker by comparing the extra cost to the extra revenue generated.

Question 18

Which of the following is a key difference between microeconomics and macroeconomics?

Accepted Answer

Microeconomics focuses on households and firms, while macroeconomics studies aggregate outcomes like inflation and unemployment.

Question 19

If a graph shows a positive relationship between two variables, which of the following is true?

Accepted Answer

As one variable increases, the other increases.

Question 20

Which of the following best explains why economists use models with assumptions and simplifications?

Accepted Answer

To focus on essential features and make analysis manageable.

Microeconomics Foundations and Models: Chapter 1 Study Guide

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