﻿ Interpreting Line Graphs Worksheet | Problems & Solutions

# Interpreting Line Graphs Worksheet

Interpreting Line Graphs Worksheet
• Page 1
1.
In which month did the company get a high profit?

 a. November b. March c. December d. January

2.
The line graph indicates the number of students in different classes. Identify the one that comes second in the ordered pairs.

 a. school b. number of students c. classes d. line graph

3.
The management of a company changed in the year 1998. The graph shows the investments (in thousands of dollars) of the company on a project from 1998 to 2001. For how many years is the investment of the company maintained?

 a. 2 b. 5 c. 3 d. 4

The investment of the company is maintained at $80,000 for 2 years. [Observe from the graph, a horizontal line segment between the years 1999 and 2001.] Correct answer : (1) 4. Use the line graph to find the average sales of sport shoes during the period 1987 to 1992.  a. 400,000 b. 390,000 c. 440,000 d. 340,000 #### Answer: (a) Correct answer : (1) 5. The line graph represents the population of a country from the year 1989 through 1992. Find the percentage increase in the population from the year 1989 to 1992, correct to 1 decimal place.  a. 65% b. 68% c. 66.7% d. 67.7% #### Answer: (c) Correct answer : (3) 6. The line graph represents the days of a month, on which the students in Swetha′s class were born . Find the total number of students born on the 1st and 2nd days of the month.  a. 12 b. 21 c. 18 d. 24 #### Answer: (b) Correct answer : (2) 7. The line graph indicates the number of Health care centers in different localities. What does the second number in the ordered pair (7, 4) represent?  a. health care b. line graph c. number of health care centers d. localities #### Answer: (c) Correct answer : (3) 8. The following line graph shows the profits made by Charles & Co. How much did the profit decrease from 1989 to 1992?  a.$2 million b. $5 million c.$3 million d. $4 million #### Answer: (c) Correct answer : (3) 9. The graph shows the annual sales of Brad & Co. from the year 1997 to 2002. Find the maximum sales made by the company during the period.  a.$61,000 b. $65,000 c.$55,000 d. $60,000 #### Solution: The sales will be maximum in the year for which the vertical coordinate of the plotted point is the highest. From the graph, the sales in the year 1998 was the highest. [For the year 1998, the vertical coordinate of the point is the highest.] The maximum sales made by the Brad & Co. is$60,000.
[Vertical coordinate of the point.]

10.
The graph shows the investment made by a company on a project in 5 years. Find the total investment made by the company on the project.

 a. $290,000 b.$340,000 c. $310,000 d.$270,000

#### Solution:

From the graph, the investment made by the company in the years 1998, 1999, 2000, 2001 and 2002 are $60,000,$80,000, $75,000,$45,000 and $50,000 respectively. Total investment =$60,000 + $80,000 +$75,000 + $45,000 +$50,000 = $310,000 . The total investment by the company on the project is$310,000.