Algebra 1 Chapter 2

25 terms

Whole Numbers

All numbers excluding negatives and decimals

Integers

All numbers excluding fractions and decimals

Rational Numbers

A number a/b where a and b are integers and b equals to 0

Opposites

2 numbers that are the same distance from the number line but are on opposite sides of 0

Absolute Value

The absolute value of a number a is the distance between a and 0 on a number line. lal represents the absolute value of a. When it is negative it then becomes positive

Equivalent Expressions

2 expressions that have the same value for all values of the variable

Distributive Property

Used to find the product of a number and a sum or difference

Terms

The parts of an expression that are added together

Coefficients

The number part of a term with a variable

Constant Term

Has a number but no variable part

Like Terms

Terms that have the same variable parts

The number or expression inside a radical symbol

Perfect Square

The square of an integer

Irrational Numbers

A number that cannot be written as a quotient of 2 integers. The decimal form of the irrational number neither terminates or repeats

Real Numbers

Set of all rational and irrational numbers

Deductive Reasoning

When you make a conclusion based on statements that are assumed or shown to be true

Commutative Property

The order in which you add two numbers does not change the sum

Associative Property

The way you group three numbers in a sum does not change the sum

Identity Property

The sum of a number and 0 is the number

Inverse Property

The sum of a number and its opposite is 0

Property of 0

The product of a number and 0 is 0

Property of -1

The product of a number and -1 is the opposite of the number

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