Functions and Relations (HSC SSCE Mathematics Advanced): Flashcards

Distance of a number from zero on a number line

Always non-negative

$f(x) = |x|$

$x$ if $x \geq 0$; $-x$ if $x < 0$

All real numbers, $(-\infty, \infty)$

All non-negative real numbers, $[0, \infty)$

V-shaped curve

$(0, 0)$

Symmetric about the y-axis

$|x|$