To determine which graph represents Willow's reading progress, let's analyze the information provided:
- Starting Point: Willow starts on page 15.
- Reading Rate: She reads 2 pages every minute.
Using this information, we can calculate her page number after a certain number of minutes:
- At 0 minutes, she will be on page 15.
- After 1 minute: 15 + 2 = 17 (page 17)
- After 2 minutes: 15 + 4 = 19 (page 19)
- After 3 minutes: 15 + 6 = 21 (page 21)
This demonstrates that Willow's page number increases linearly over time. The equation for her progression can be expressed as:
\[ \text{Page Number} = 15 + 2 \times \text{Minutes} \]
Based on the equation:
- At 0 minutes (x = 0), y = 15.
- At 30 minutes (x = 30), y = \(15 + 2 \times 30 = 15 + 60 = 75\).
Thus, the point (0, 15) should be where the line starts, and it should extend through points such as (30, 75).
Now, checking the descriptions of the graphs provided:
- The first graph describes a plot starting at (0, 15) and extending to (30, 75), which perfectly represents Willow's reading progress.
Therefore, the first graph is the correct response.