The number line in the image has tick marks indicating integers, and the dot is placed at a position slightly to the left of 0, specifically at -1. Therefore, the number marked by the dot on the number line is -1.

Would you like a detailed explanation, or do you have any questions about this?

Here are five related questions you might find interesting:

1. How do you determine the position of a fraction on a number line?
2. What is the significance of zero on a number line?
3. How would the number line change if the dot were moved to 1.5?
4. What is the difference between integers and rational numbers on a number line?
5. How can negative numbers be represented on a number line?

Tip: When placing points on a number line, remember that the distance between tick marks is uniform, so each segment represents the same numerical interval.