Algebra Chapter 1
Terms
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- equation
- formed by placing an equals sign between two numerical or variable expressions
- real number
- any number that is either positive, negative, or zero
- formula
- an equation that states rules about relationships
- variable
- a symbol used to represent one or more numbers
- coordinate
- number paired with a point on the number line
- evaluate
- replace each variable in a variable expression by a given value and simplify
- solution or root
- any value of a variable that turns an open sentence into a true statement
- graph
- point paired with a number on the number line
- simplify
- replace a numerical expressions by the simplest name for its value
- grouping symbol
- a device, such as a pair of parentheses, used to enclose an epxression
- absolute value
- the distance between the graph of a number and the origin
- substitution principle
- an expression may be replaced by another expression that has the same value
- inequality symbol
- used to show the order of two real numbers
- whole numbers
- the set of all positive integers and zero
- solution set
- the set of all solutions of an open sentence; any value that makes a statement true
- domain
- given set of numbers that a variable may represent
- origin
- the point labeled zero on the number line
- opposite
- each number in a pair, such as 6 and -6