Take a look at the example_usage.py too. Take note that all the functions exist inside a class called DynamicPygameGraphs. Essentially you need to first make an instance of this class with details ...

To set the x – axis values, we use np.arange() method in which first two arguments are for range and third one for step-wise increment. The result is a numpy array. To get corresponding y-axis values, ...

The plot function creates a 2D plot with the slope-intercept form of the equation, and the (x,-10,10) part specifies the range of the graph, between the x values of -10 and 10. This will also be ...

That means you can refer to x with y = x * 10 in a cell above the cell that defines x. And, you can use a custom function at the top of your notebook but define it at the very end.