Virtual Nerd
Virtual Nerd: How Do You Write an Equation for a Quadratic With 3 Points?
This lesson shows how to write the equation for a parabola when given three points. [9:22]
Other
Nsccalp: Math: Finding the Equation Given Three Points (Quadratic Functions)
This video from the Nova Scotia Community College Adult Learning Program explains how to find a quadratic equation when given three points on its graph. [9:40]
Imagine Learning Classroom
Learn Zillion: Video: Understand Limitations of Using Zeros to Graph a Quadratic
In this lesson, you will learn the limitations of using zeros to graph a quadratic function by using functions with no zeros or real roots. [3:08]
Khan Academy
Khan Academy: Quadratic Odds and Ends: Quadratics and Shifts
Problems address understanding of quadratic equations, ways to solve quadratic equations, and translations of graphs of quadratic equations.
Other
Mario's Math Tutoring: What Is Interpolation and Extrapolation?
Learn the difference between interpolation and extrapolation in this free math video tutorial [2 mins, 42 secs]by Mario's Math Tutoring.
Sophia Learning
Sophia: Extrapolation: Lesson 2
This lesson introduces and defines extrapolation of data. It is 2 of 5 in the series titled "Extrapolation."
Sophia Learning
Sophia: Extrapolation: Lesson 3
This lesson introduces and defines extrapolation of data. It is 3 of 5 in the series titled "Extrapolation."
Sophia Learning
Sophia: Quadratic Formula and Complex Numbers
Explains how complex numbers are related to the quadratic formula, in particular talks about the determinant of the quadratic formula being a negative.
Sophia Learning
Sophia: Quadratic Formula and Complex Numbers
Explains how complex numbers are related to the quadratic formula, in particular talks about the determinant of the quadratic formula being a negative.