Question 1

-What does the slope of the curved line at point A shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the curved...

Question 2

If the change in the y-axis variable is 4 and the change in the x-axis variable is 2, the slope of this line is 1/2.

Accepted Answer

The slope of a line is calculated by the change in the y-axis variable divided by the change in the x-axis variable, so in this case, it would be 4/2 = 2.

Question 3

The slope of a line is the change in the y-axis variable divided by the change in the x-axis variable.

Accepted Answer

This is a direct definition of slope, and is true.

Question 4

The slope of a straight line increases as the numbers on the x-axis become larger.

Accepted Answer

This statement is false. The slope of a straight line remains constant regardless of the numbers on the x-axis.

Question 5

If the x-axis variable increases while the y-axis variable decreases, the variables x and y are negatively related.

Accepted Answer

This is because when one variable increases and the other decreases, their corresponding values in a scatter plot would form a downward sloping line, indicating a negative correlation between the two variables.

Question 6

If the change in the y-axis variable is 6 and the change in the x-axis variable is 5, the slope of this line is 6/5.

Accepted Answer

The slope of a line is defined as the change in the y-axis variable divided by the change in the x-axis variable. In this case, the change in y is 6 and the change in x is 5, so the slope is 6/5. Therefore, the answer is A.

Question 7

A cross-section graph can show how economic variables for different groups of people vary over time.

Accepted Answer

The answer of A cross-section graph can show how economic...

Question 8

To calculate the slope of a curved line, you can calculate the slope at a point on the curve or across an arc of the curve.

Accepted Answer

The slope of a straight line can be calculated by dividing the change in y by the change in x. However, for a curved line, the slope is not constant and changes at every point. Therefore, to calculate the slope of a curved line, you need to calculate the slope at a specific point or across an arc of the curve. This can be done using calculus or approximated using finite differences.

Question 9

The vertical axis of a graph shows only positive values.

Accepted Answer

The vertical axis of a graph can show both positive and negative values, depending on the data being represented.

Question 10

"Ceteris paribus" refers to the idea that if more than two variables are graphed, only one variable must be held constant.

Accepted Answer

"Ceteris paribus" refers to the idea that all other variables are held constant except for the one being studied, not limited to situations where only one variable changes while more than two are graphed.

Question 11

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 12

When graphed, variables that are unrelated are shown by either a horizontal or a vertical line.

Accepted Answer

The answer of When graphed, variables that are unrelated are...

Question 13

A graph cannot be used to show that two variables are unrelated.

Accepted Answer

A graph can show that two variables are unrelated by displaying a scattered or dispersed pattern with no clear trend or correlation. However, if a graph does show a clear trend or correlation, it suggests that the variables are related in some way.

Question 14

A scatter diagram plots the value of one economic variable against time.

Accepted Answer

A scatter diagram plots the relationship between two variables, not just one variable against time.

Question 15

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 16

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 17

-Jamie is preparing to take his SAT tests. The table above shows how Jamie's score depends on the number of hours a week Jamie studies.
a) Plot the relationship in the figure, putting the hours studied on the horizontal axis.
b) Is the relationship you plotted positive or negative?
c) What happens to the slope of the relationship as hours studied increase?
d) Suppose Jamie can enroll in an SAT prep course and, by so doing, for every possible number of hours he studies, his score will be 100 points higher. Plot the new relationship between the number of hours studied and Jamie's SAT score in the figure.
e) How many variables are involved in the figure you just completed?

Accepted Answer

The answer of  
-Jamie is preparing to take his...

Question 18

-What does the slope of the line shown in the above figure equal?

Accepted Answer

The answer of 
-What does the slope of the line...

Question 19

To graph a relationship that involves more than two variables, we use the "ceteris paribus" assumption.

Accepted Answer

The "ceteris paribus" assumption allows us to focus on the relationship between two variables by assuming that all other variables remain constant, making it easier to graph relationships even when more than two variables are involved.

Quiz 1: What Is Economics

-What does the slope of the curved line at point A shown in the above figure equal?

If the change in the y-axis variable is 4 and the change in the x-axis variable is 2, the slope of this line is 1/2.

The slope of a line is the change in the y-axis variable divided by the change in the x-axis variable.

The slope of a straight line increases as the numbers on the x-axis become larger.

If the x-axis variable increases while the y-axis variable decreases, the variables x and y are negatively related.

If the change in the y-axis variable is 6 and the change in the x-axis variable is 5, the slope of this line is 6/5.

A cross-section graph can show how economic variables for different groups of people vary over time.

To calculate the slope of a curved line, you can calculate the slope at a point on the curve or across an arc of the curve.

The vertical axis of a graph shows only positive values.

"Ceteris paribus" refers to the idea that if more than two variables are graphed, only one variable must be held constant.

-What does the slope of the line shown in the above figure equal?

When graphed, variables that are unrelated are shown by either a horizontal or a vertical line.

A graph cannot be used to show that two variables are unrelated.

A scatter diagram plots the value of one economic variable against time.

-What does the slope of the line shown in the above figure equal?

-What does the slope of the line shown in the above figure equal?

-What does the slope of the line shown in the above figure equal?

To graph a relationship that involves more than two variables, we use the "ceteris paribus" assumption.