- Rectas
- Función lineal
- Algebra: 4.4 Find the right slope!
- Writing Equations of Lines Practice
- Intervalli aperti e chiusi
- Investigating General Linear Equations
- :: Lineare Funktion Steigung und Abstand Flugzeug ::
- Sistemes equacions lineals amb 2 incògnites
- Equations of Parallel and Perpendicular Lines
- Domain & Range
- Quiz on Equation of Straight Lines 直線的方程：測驗
- Ecuaciones de la recta
