Distance - Time Graphs - Speed and Acceleration on a Graph

In the video, I show several distance-time graphs and explain the motion that the graphs represent.
I show what a graph of constant motion looks like, what reverse looks like on a graph, and what acceleration and deceleration look like.

The slope of a distance-time graph represents the velocity of the object. A positive slope indicates that the object is moving in a positive direction, while a negative slope indicates that the object is moving in a negative direction. The steeper the slope, the faster the object is moving.

The y-intercept of a distance-time graph represents the initial position of the object. The x-intercept of a distance-time graph represents the time at which the object reaches its final position.

Distance-time graphs can be used to analyze the motion of objects. For example, they can be used to determine the velocity of an object, the acceleration of an object, and the distance traveled by an object.

[mathborg]

This was helpful but could you please explain how curves mean acceleration