Eduqas GCSE Mathematics key terms

A comparison in which one quantity is a fixed multiple of another, written as $A=kB$, where $k$ is the multiplier.

The number by which one quantity is multiplied to obtain another. If $A=kB$, the multiplier from B to A is $k$.

Events that cannot both occur in the same experiment.

An index that represents a reciprocal: $a^{-n}=\frac{1}{a^n}$, where $a\ne0$.

The number obtained by taking a reciprocal and changing its sign. For non-zero $m$, its negative reciprocal is $-\frac{1}{m}$.

A flat arrangement of surfaces that can be folded to form a three-dimensional solid.

An algebraic rule that gives the value of a sequence term from its position $n$, with the first term normally at $n=1$.

The top number in a fraction; in $\frac{3}{5}$, the numerator is 3.

The original shape before a transformation.

An angle greater than $90^\circ$ and less than $180^\circ$.

A question that allows someone to give an answer in their own words rather than choosing from supplied options.

A mathematical operation applied to a number or quantity. A fraction or percentage used as an operator tells you what to multiply the quantity by.

The side of a right-angled triangle directly across from the acute angle being used.

The number of matching positions of a shape during a full $360^\circ$ turn, including the final position but not counting the starting position separately.

The point $(0,0)$ where the coordinate axes meet.

A possible result of a probability experiment.

A data point that lies away from the general pattern of the other points.

The value produced when a function's rule is applied to an input.

An estimate greater than the exact value.

The curved graph of a quadratic function such as $y=ax^2+bx+c$.

Lines in the same plane that remain the same distance apart and do not meet.

Straight lines in the same plane that remain the same perpendicular distance apart and never meet.

A quadrilateral with two pairs of parallel opposite sides.

A comparison between two separate parts of a whole. In a ratio $a:b$, the whole contains $a+b$ equal-sized parts.

A comparison between one part and the entire quantity, including that part. In a ratio $a:b$, the whole contains $b$ equal-sized parts.

A unit of pressure equal to one newton per square metre: $1\text{ Pa}=1\text{ N/m}^2$.

Per year; used to state an annual interest rate.