Grade 12 Mathematics: Functions Revision

These flashcards cover key concepts and terminology related to linear and quadratic functions as part of Grade 12 mathematics.

Linear function

A function that graphs to a straight line, generally expressed in the form y = ax + q.

Gradient

The slope of a line, represented by 'a' in the equation of a linear function.

Standard form of a linear function

The equation of the line written as y = ax + q.

x-intercept

The point where a line crosses the x-axis, found by making y = 0.

y-intercept

The point where a line crosses the y-axis, found by making x = 0.

Turning point

The vertex of a quadratic function, where the function changes direction.

M₁ x M₂ = -1

The condition for two lines to be perpendicular in terms of their slopes.

Domain

The set of all possible input values (x-values) for a function.

Range

The set of all possible output values (y-values) for a function.

Intercept form of a function

An equation expressed as y = (x - x₁)(x - x₂) where x₁ and x₂ are x-intercepts.