Revision (Grade 12 NSC Matric Mathematics): Flashcards

$\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$M = \left(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2}\right)$

$y = mx + c$

$y = k$ (constant)

$x = k$ (constant)

$m = \tan \theta$ for $0° \leq \theta < 180°$

$m_1 = m_2$

$m_1 \times m_2 = -1$

Add 180° to reference angle