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Line Graphs, Part I |
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Unit 11 > Lesson 1 of 10 |
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Example 1:
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The table below shows daily temperatures for New York City, recorded for
6 days, in degrees Fahrenheit.
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| Temperatures In NY City |
| Day |
Temperature |
| 1 |
43° F |
| 2 |
53° F |
| 3 |
50° F |
| 4 |
57° F |
| 5 |
59° F |
| 6 |
67° F |
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The data from the table above has been summarized in the line graph below.
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Example 2:
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Sarah bought a new car in 2001 for $24,000. The dollar value of her car changed each
year as
shown in the table below.
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| Value of Sarah's Car |
| Year |
Value |
| 2001 |
$24,000 |
| 2002 |
$22,500 |
| 2003 |
$19,700 |
| 2004 |
$17,500 |
| 2005 |
$14,500 |
| 2006 |
$10,000 |
| 2007 |
$ 5,800 |
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The data from the table above has been summarized in the line graph below.
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Example 3:
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The table below shows Sam's weight in kilograms for 5 months.
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| Sam's Weight |
| Month |
Weight in kg |
| January |
49 |
| February |
54 |
| March |
61 |
| April |
69 |
| May |
73 |
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The data from the table above has been summarized in the line graph below.
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In Example1, the temperature changed from day to day. In Example 2, the value of
Sarah's car decreased from year to year. In Example 3, Sam's weight increased
each month. Each of these line graphs shows a change in
data
over time. A
line graph is useful for displaying data or information that changes
continuously over time. Another name for a line graph is a line chart. |
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