AQA GCSE Mathematics key terms

Notation for the output of function $f$ when its input is $x$.

A sequence in which each term is obtained by multiplying the previous term by the same number.

A chain of statements in which each step follows from given information or an established mathematical fact, establishing that a result must be true.

A pattern in which consecutive terms have a constant multiplicative ratio.

The change in $y$ divided by the corresponding change in $x$ between two points on a line.

A value found from a graph rather than exactly by algebra, so its accuracy is limited by the scale and drawing.

The set of points representing a function on coordinate axes, usually written in the form $y=f(x)$.

Data presented in classes or intervals rather than as individual values.

A change in which a quantity increases over time, often by the same proportion or percentage in each period.

An area equal to 10,000 square metres, commonly used for measuring land.

The greatest factor shared by every term in an expression.

The greatest whole number that divides exactly into each of two or more numbers.

One of one hundred equal parts of a whole; the second place to the right of the decimal point.

The longest side of a right-angled triangle, opposite its right angle.

An equality that is true for every permissible value of its variables.

The shape produced by a transformation.

A fraction whose numerator is greater than its denominator, so its value is greater than $1$.

An angle formed by two given sides; it lies between those sides.

The angle between two specified sides, or the side between two specified angles.

An inequality using $\leqslant$ or $\geqslant$, in which the boundary value is included.

Tax paid on taxable income, such as earnings.

Events for which knowing that one has occurred does not change the probability of the other.

The small raised number in a power; it tells you how many copies of the base are multiplied together. In $x^5$, the index is $5$.

An inequality compares expressions using $<$, $>$, $\leq$ or $\geq$ rather than stating that they are equal.

The gradient at one particular point on a curve, representing the rate of change at that instant.

A whole number, including zero and negative whole numbers, such as $4$, $0$ or $-7$.

The point where a graph crosses an axis.

A percentage used to calculate interest on money saved or borrowed for a stated period.

An angle formed between two sides at a vertex, measured inside a polygon.