Willow is rereading her favorite book. She starts the day on page 15 looking at the clock. She realizes that she can read two pages every minute choose the sketch of a graph that shows the relationship between the numbers of minutes willow has been reading today and the page number she is on.

Unfortunately, as an AI text-based model, I am unable to provide visual sketches. However, I can describe the relationship between the number of minutes Willow has been reading today and the page number she is on.

Since Willow can read two pages every minute, we can determine the page number she will be on based on the number of minutes she has been reading.

For the first 15 minutes, she will be on pages 15 and 16.
After 16 minutes, she will be on pages 17 and 18.
Each additional minute will add two pages to her progress.

Therefore, the relationship between the number of minutes Willow has been reading today (x) and the page number she is on (y) can be expressed as follows:

y = 2x + 15

This equation represents a linear relationship between the number of minutes and the page number.