Learn the difference between distance, displacement, speed and velocity, and how to calculate distance, speed and acceleration.

But if you calculate the acceleration without the graph, you are explicitly stating that the y-intercept is zero---which it might not be. So there are some actual reasons for making a graph.

How to Find the Slope of a Line on an Excel Graph. In math and statistics, you may occasionally need to calculate the slope of a line generated by coordinates in the (x,y) format.

If the velocity-time graph is curved, the acceleration can be found by calculating the gradient of a tangent to the curve.