Revision (Grade 11 NSC Matric Mathematics): Flashcards

Numbers, variables & operations like +, -, ×, ÷, powers

Statement that two expressions are equal (uses = sign)

Value of $x$ where $f(x) = 0$; graph crosses/touches x-axis

Second-degree equation; highest power of variable is 2

$ax^2 + bx + c = 0$ where $a$, $b$, $c$ constants, $a ≠ 0$

If $a imes b = 0$, then $a = 0$ or $b = 0$ (or both)

Parabola crosses x-axis at two different points

Parabola touches x-axis at exactly one point (vertex)

Parabola lies entirely above/below x-axis, no touching

When squaring both sides (may introduce invalid solutions)