Graphing Vertical Line Test Please login for access. Login Video Chapters Select a chapter below to jump directly to that point in the video. Vertical Line Test Basics 0:00Intro 0:49What Makes a Function 1:52How the Vertical Line Test Works 3:19Testing Multiple Vertical Lines Functions and Non-Functions 4:39Example 1 6:47Drawing Vertical Lines by Hand 7:20One Failed Line Is Enough 7:50Vertical and Horizontal Lines 8:43Example 2 11:46The Turning Point Circles and Semicircles 13:11Example 3 15:15Rearranging the Circle Equation 16:14Upper and Lower Semicircles Further Examples 17:15Example 4 19:41Example 5 21:19Example 6 23:55Example 7 25:10Summary 25:44Outro