Functions (Grade 12 NSC Matric Mathematics): Flashcards

$y = \pm\sqrt{\frac{x}{a}}$

Switch x and y, then solve for y

Two branches: positive and negative

They switch roles

Check if relation is a function

Two y-values for each x-value

Restrict domain of original function

$y = \sqrt{\frac{x}{a}}$ for $x \geq 0$

$y = x$

$(b,a)$