Graph Worksheets - Free Printable

You're looking at an answer key for a math worksheet titled "Drawing Double Line Graph." The task was to create a double line graph using the provided data, and this image shows the *correctly completed graph*.

Here's a breakdown of how the solution was created and what it represents:

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1. Understanding the Data

The table provides the average number of passengers for "Nova Air" on each day of the week, broken down into two time periods:
- Morning
- Afternoon

| Day | Morning | Afternoon |
|-----------|---------|-----------|
| Monday | 900 | 400 |
| Tuesday | 750 | 500 |
| Wednesday | 300 | 950 |
| Thursday | 850 | 400 |
| Friday | 600 | 700 |
| Saturday | 800 | 500 |
| Sunday | 650 | 950 |

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2. Creating the Double Line Graph

To draw the graph:

- X-axis (Horizontal): Labeled “day of the week” — Monday through Sunday.
- Y-axis (Vertical): Labeled “average number of passengers” — scaled from 0 to 1000 in increments of 100.
- Two Lines:
- Blue line = Morning passengers
- Red line = Afternoon passengers

Each point on the graph corresponds to one value from the table.

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3. Plotting the Points

Let’s trace the blue line (morning):

- Monday → 900 → Point at (Monday, 900)
- Tuesday → 750 → Point at (Tuesday, 750)
- Wednesday → 300 → Point at (Wednesday, 300)
- Thursday → 850 → Point at (Thursday, 850)
- Friday → 600 → Point at (Friday, 600)
- Saturday → 800 → Point at (Saturday, 800)
- Sunday → 650 → Point at (Sunday, 650)

Now the red line (afternoon):

- Monday → 400 → Point at (Monday, 400)
- Tuesday → 500 → Point at (Tuesday, 500)
- Wednesday → 950 → Point at (Wednesday, 950)
- Thursday → 400 → Point at (Thursday, 400)
- Friday → 700 → Point at (Friday, 700)
- Saturday → 500 → Point at (Saturday, 500)
- Sunday → 950 → Point at (Sunday, 950)

Then, connect the dots for each line with straight segments.

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4. Key Observations from the Graph

- Highest morning traffic: Monday (900)
- Lowest morning traffic: Wednesday (300)
- Highest afternoon traffic: Wednesday & Sunday (both 950)
- Lowest afternoon traffic: Monday & Thursday (both 400)

There are clear trends:
- Morning passengers peak early in the week (Monday) and dip mid-week (Wednesday), then rise again.
- Afternoon passengers are lowest early in the week and peak toward the end (Wednesday and Sunday).

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5. Why This is the Correct Answer

This graph correctly:
✔ Uses different colors (blue for morning, red for afternoon) as instructed
✔ Plots all 14 data points accurately
✔ Connects the points properly for each line
✔ Labels axes and includes a legend (key)
✔ Matches the data exactly from the table

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✔ Final Answer:

The image you uploaded is the correct solution to the worksheet task. It visually represents the average number of Nova Air passengers for morning and afternoon flights across the week, using a double line graph with clearly labeled axes, a color-coded key, and accurate plotting of all data points.

No further action is needed — this is the completed answer key!