Linear Functions

Lessons

1. 1 What, Exactly, Is a Function?Lesson 1 companion 3:27
2. 2 The Two Ways Humans ReasonLesson 2 companion 3:09
3. 3 Close Enough Is a SuperpowerLesson 3 companion 3:13
4. 4 Slope Is Just "How Fast"Lesson 4 companion 3:01
5. 5 One Equation. Predict the Future.Lesson 5 companion 3:02
6. 6 A Spreadsheet Is a Grid of FunctionsLesson 6 companion 3:18

Lines

1. 7 What Is the y-Intercept, Really?Lines 2:57
2. 8 y = mx + b Is a MachineLines 2:51
3. 9 The Point-Slope Formula, ExplainedLines 3:24
4. 10 Parallel and Perpendicular, in One PictureLines 3:25
5. 11 Two Points Define a LineLines 3:20
6. 12 How to Find the Equation of a Line Through Two PointsLines 4:11
7. 13 Linear Model Application: Writing an Equation From a Word ProblemLines 4:53

Functions

1. 14 f(x) Is Not f Times xFunctions 3:44
2. 15 Domain and Range, in Plain EnglishFunctions 3:34
3. 16 The Vertical Line Test, ExplainedFunctions 3:14
4. 17 Find f(3) With No FormulaFunctions 3:20

Edge Cases

1. 18 Where Two Lines MeetEdge Cases 3:08
2. 19 Slope Zero vs Slope UndefinedEdge Cases 4:04
3. 20 Negative Slope Isn't BadEdge Cases 2:45
4. 21 Ax + By = C, DecodedEdge Cases 2:52