Symbol  Format  Data 

a  Code Point 
U+0061 
TeX 
a 

SVG 
The ‘a’ symbol is used in mathematics and science to denote a variable, coefficient or constant. It is often used as a general purpose variable and in equations. For example, in the quadratic equation:
‘a’ represents the coefficient of the squared term. In this equation, the values of ‘a’, ‘b’, and ‘c’ are constants and determine the shape and position of the parabola when the equation is graphed.
The capital Latin letter A is used in mathematics as a variable to represent a set, a vector, or a matrix.
The latin letter b is used to represent a variable or coefficient.
The Latin small letter c is used in math to represent a variable, constant or coefficient.
The Latin small letter x is used to represent a variable or coefficient. In algebra, x is often used to represent an unknown value. The symbol x is also used to represent the horizontal dimension in the 2D cartesian coordinate system.
The Latin letter y is used to represent a variable or coefficient. Most commonly, y is the vertical dimension in the 2D cartesian coordinate system.
The Latin letter z is used to represent a variable or coefficient. The symbol z is also used to represent the up/down dimension in the 3D cartesian coordinate system.
A variable is a symbol that represents an unknown or indeterminant quantity. Variables can represent numbers, vectors, or other mathematical objects, depending on the context.
A constant is a value that does not change or vary in a mathematical expression or equation. It is the opposite of a variable, which can take on different values. Constants can be numbers, symbols, or even functions that remain unchanged throughout a given problem or context.
A coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.