Symbolic variables have to be defined before you can use them with SymPy. We can use regular variables for the coefficients as we did with NumPy. Let's plot the linear equation from earlier using ...

Windows Calculator has a Graphing feature. We show all its features in Windows 11/10 that you can use to make mathematics more insightful.

In the regression output above, we can see that for every one-point change in Visa, there is a corresponding 1.36-point change in the S&P 500. We can also see that the p-value is very small (0. ...