28 terms

Integers

The numbers consisting of the negative integers, zero, and the positive integers.

Absolute value

The absolute value of a number a is the distance between a and 0 on a number line. The absolute value of a is written as |a|.

Opposites

Two numbers that are the same distance from 0 but on opposite sides of 0.

Additive identity

The number 0 is the additive identity because the sum of any number and 0 is the original number.

Additive inverse

The additive inverse of a number a is the opposite of the number, or -a. The sum of a number and its additive inverse is 0.

Sum

The answer to an addition problem.

Difference

The answer to a subtraction problem.

Multiplicative identity

The number 1.

Product

The answer to a multiplication problem.

Mean

The sum of the values in a data set divided by the number of values. Also called the average.

Identity Property of Addition

The sum of any addend and 0 is that number.

Identity Property of Multiplication

The product of any factor and 1 is that number.

Inverse Property of Addition

The sum of a number and its additive inverse, or opposite, is 0.

Distributive Property

For all numbers a, b, and c, a(b+c)= ab+bc and a(b-c)= ab-ac.

Terms of an expression

The parts of an expression that are added together or subtracted from.

Like terms

Terms that have identical variable parts raised to the same power. Two or more constants are also considered like terms.

Coefficient

The number part of a term that included a variable.

Constant term

A term that has a number but no variable.

Coordinate plane

A coordinate system formed by the intersection of a horizontal number line, called the x-axis, and a vertical number line, called the y-axis.

x-axis

The horizontal number line in a coordinate plane.

y-axis

The vertical number line in a coordinate plane.

Origin

The point (0,0) where the x-axis and the y-axis meet in a coordinate plane.

Quadrant

One of the four regions that a coordinate plane is divided into by the x-axis and the y-axis. They are numbered counter clockwise starting in the top right hand quadrant I, II, III, IV (1-4 in Roman numerals).

Ordered pair

A pair of numbers (x,y) that can be used to represent a point in a coordinate plane. The first number is the x-coordinate and the second number is the y-coordinate.

x-coordinate

The first term in a coordinate pair.

y-coordinate

The second term in a coordinate pair.

Negative integers

Integers less than 0.

Positive integers

Integers greater than 0.