Hello guys, Welcome to Africa's Largest Video Search Engine, and you are watching 12 - Writing Quadratic Functions in Vertex Form - Part 1 (Graphing Parabolas). and this video is uploaded by Math and Science at 2019-08-27T06:15:03-07:00. We are just promoting this video only for entertainment and educational purpose only. I hop you like our Video Search Engine. [srATPsoqA2A]