Problems B and C | CCTT MathSummer

Data In Line Graphs: Problems B, C, and D

Some line graphs have separate lines for different items. By plotting different sets of data on the same graph, you can make a comparison between the sets of data.

B. The line included in the graph below shows the level of unemployment in a state over a sever-year period. Below are the corresponding unemployment rates for Middleboro, a major city in this state. Use a different colored pen, pencil, or marker to plot these points on the graph.

Unemployment in Middleboro

Year 1: 4.4% Year 3: 9.3% Year 5: 10.1% Year 7: 7.1%

Year 2: 6.1% Year 4: 12.2% Year 6: 7.6%

C. Use the line graph to answer the questions.

    1. In which year did the state have the highest unemployment rate? ____________________________________

         The lowest rate? _________   Is this also true for Middleboro? ____________________________________

    2. In general how does the unemployment rate in Middleboro compare to the state's rate? __________________

    3. Is the difference between the state's and Middleboro's unemployment rate always in the same proportion?_____

        Explain your answer. ____________________________________________________________________

    4. By looking at the graph, what do you think might happen in year 8? Why? ____________________________

        _____________________________________________________________________________________

D. On Your Own

    Without plotting exact points, sketch some line graphs to depict different changes, such as your height or weight, over time. Explain your sketches.

Problem A

Unemployment in Middleboro
Year 1: 4.4%	Year 3: 9.3%	Year 5: 10.1%	Year 7: 7.1%
Year 2: 6.1%	Year 4: 12.2%	Year 6: 7.6%