Final answer:
To find the constant difference, we can subtract the position of the street light in one step from the position of the street light in the next step. The constant difference is 2, since the pattern moves from the last house to the 5th house, then from the 5th house to the 2nd house, and finally from the 2nd house to the 3rd house.
Step-by-step explanation:
The pattern described in the question can be represented as follows:
- The street light is positioned on the last house of the street.
- The street light is positioned on the 5th house's pavement.
- The street light is positioned on the 2nd house's pavement.
- The street light is positioned on the 3rd house's pavement.
To find the constant difference, we can subtract the position of the street light in one step from the position of the street light in the next step. The constant difference is 2, since the pattern moves from the last house to the 5th house, then from the 5th house to the 2nd house, and finally from the 2nd house to the 3rd house.