Step-by-step explanation:
The attached figure shows the position-time graph of a ladybug. We need to find the average speed of the ladybug between t = 4 s to t = 7 s.
We know that, the slope of a position-time graph gives velocity of an object. It can be given by :
![v=(y_2-y_1)/(t_2-t_1)](https://img.qammunity.org/2021/formulas/physics/high-school/obi7kf2sdp46md8cvkr0g17q5nmum0ea1a.png)
In this case, the position of a ladybug at t = 4 s and at t = 7 s is the same i.e. 2 m.
It means its velocity is equal to at this time or we can say that ladybug is at rest.