Gradient of a Line (Grade 10 NSC Matric Mathematics): Flashcards

Steepness/slope of a line

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

Equal gradients: $m_1 = m_2$

Product = -1: $m_1 \times m_2 = -1$

0 (zero)

Undefined

$y = mx + c$ (m=gradient, c=y-intercept)

Points lying on the same straight line

Vertical change divided by horizontal change

Negative inverses of each other