Jedelyn A-Z Math Book

A= Array

An arrangement of object, pictures, or numbers in columns and rows are called an array. Arrays are useful representations of multiplication concepts. This array has 4 rows and 5 columns. It can also be described as a 4 by 5 array. 

B= Back- Substitution

The process of solving a linear system of equations that has been transformed into row-echelon form. The last equation is solved first, then next-to-last, etc.

  C= Circle

-The locus of all points that are a fixed distance from a given point. 

– A round plane figure whose boundary (The circumference) consists of points equidistant from a fixed point (the center).

D= Division

To divide or division is sharing or grouping. A number into equal parts. Divided: the number being divided. Divisor or factor: a number that will divide the divided exactly.

E= Evaluate

Evaluate expressions. A variable is a letter for example x, y, or z, that represents an unspecific number… To evaluate an algebraic expression, you have to substitute a number of each variable and perform the arithmetic operations. 

F= Factor

Factors are numbers we can multiply to get another number. In algebra, factors are what we can multiply together to get an expression. A number can have many factors! 

Example: 2 and 3 are factors of 6, because 2 times 3 equals 6.

G= Graph 

A diagram representing a system of connections or interrelations among two or more things by a number of distinctive dots, lines, bars, etc.

H= Hexagon 

A plane figure with six straight sides and angles. 

I= Inch 

A unit of linear measure equal to one twelfth of a foot (2.54 cm).

J= Joint Variation

When we say z is jointly proportional to a set of variables, it means that z is directly proportional to each variable taken one at a time. 

K= Kite

A quadrilateral with two pairs of adjacent sides that are congruent. Note the diagonals of a kite are perpendicular. 

L= Line

The geometric figure formed by two points. A line is a straight path connecting two points and extending beyond the points in both directions.

M= Multiplication

The act or process of multiplying or the state of being multiplied. Multiplication is the opposite of division just like addition is the opposite of subtraction.

N= Number Line

A line representing the set of all real numbers. The number line is typically marked showing integer values.