Graphing Straight Lines (VCE SSCE Mathematical Methods): Flashcards

Points where line crosses x-axis and y-axis

Zero

Set $y = 0$ and solve for $x$

Zero

Set $x = 0$ and solve for $y$

The constant term $c$

Angle line makes with positive x-axis direction

$\tan \theta = m$ where $m$ is gradient

$\theta = \arctan(m)$, gives acute angle

$\theta = 180° - \arctan(|m|)$, gives obtuse angle