The discussion centers on the classification of linear equations, specifically addressing the equations labeled as (a) and (f). It is established that linear equations must not contain roots of variables. A participant suggests that if equation (a) includes $-\sqrt{2x_3}$, it cannot be classified as linear, proposing a correction to $-\sqrt{2} \hspace{1 mm} x_3$ to maintain linearity. This highlights the importance of proper notation in identifying linear equations.
PREREQUISITESStudents, educators, and anyone involved in algebra who seeks to clarify the definition and identification of linear equations.
