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McGraw-Hill Math Grade 7 Answer Key Lesson 21.3 Double-Line Graphs
Exercises
INTERPRET
Question 1.
What sort of relationship can you see in the graph below between sales and profits?
Answer:
The higher the sales,
the higher the profits.
Explanation:
The above graph shows the relationship between sales and profits.
When the sales are higher, the profits are also high.
Question 2.
There is an old saying that “money does not buy happiness.” Does the double-line graph below support that? Why or why not?
Answer:
Yes,
Explanation:
From the above Juhan’s professional graph,
there is an increase in salary with the corresponding decrease in happiness.
Simultaneously when decrease in salary with the corresponding increase in happiness.
Question 3.
In this double-line graph, the life expectancy of males and females appears to stay at a constant difference of about 4 years. What is the good news for males in spite of this? Explain your answer.
Answer:
Males and Females are living longer.
Explanation:
The above double-line graph, the life expectancy at birth.
The males and females appears to stay at a constant difference of about 4 years.
The good news for males is females are also living longer.
Question 4.
Utilizing this triple-line graph. what conclusion can you reach about expenditures for the Criminal Justice system during the period 1982-2006?
Answer:
Expenditures are going up,
Explanation:
From the above triple line graph of Direct Expenditure of Criminal Justice System 1982-2006,
shows the expenditures are going up and police are going up faster than the other two areas.