Get the full course at: http://www.MathTutorDVD.com Here you'll learn how to find intersection points between multiple graphs using the TI89 graphing calculator. In this lesson, you will get an overview of the TI-89 calculator features and functions. We will learn how to graph equations, solve equations, work with matrices, vectors, unit conversion, and more. In calculus, we will learn how to take integrals and derivatives, limits, and more. In statistics, we will learn how to perform linear regression, standard deviation, variance, scatter plots, and more.