## Ch 1 Vocabulary

##### Created by:

ffmisch  on October 20, 2009

Mr. Misch, Math

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# Ch 1 Vocabulary

 Absolute ValueThe distance a number is from zero on a number line
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#### Definitions

Absolute Value The distance a number is from zero on a number line
Additive Inverse Two integers that are the opposite of each other. The sum of any number and its additive inverse is zero.
Algebraic Expression A combination of variables, numbers and at least one operation.
Conjecture An educated guess.
Coordinate A number associated with a point on a number line.
Counter Example A statement or example that shows a conjecture is false.
Defining a Variable Choosing a variable and a quantity for the variable to represent in an expression or an equation.
Equation A mathematical sentence that contains an equals sign, =
Inequality A mathematical sentence that contains <,>, "not equal to" sign, "greater than or equal to" sign, or "less than or equal to" sign.
Integers The set of whole numbers and their opposites.
Inverse Operations Pairs of operations that undo each other.
Negative Number A number that is less than zero.
Numerical Expression A mathematical expression that has a combination of numbers and at least one operation.
Open Sentence An equation that contains a variable.
Opposites Two numbers with the same absolute value but different signs. The sum of opposites is zero.
Order of Operations The rules to follow when more than one operation is used in an expression.
Powers Numbers written using exponents. Powers represent repeated multiplications.
Property An open sentence that is true for any numbers.
Solution The value for the variable that makes an equation true.
Solve To find the value of a variable that makes a solution true.
Variable A symbol, usually a letter, used to represent a number in mathematical expressions or sentences.

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