| A | B |
|---|
| sequence | An ordered list of numbers |
| sum | The result obtained when numbers or expressions are added |
| difference | The result obtained when numbers or expressions are subtracted |
| product | The result obtained when numbers or expressions are multiplied |
| factors | Numbers or variable expressions that are multiplied |
| quotient | The result obtained when numbers or expressions are divided |
| numerator | The number or expression above the fraction bar in a fraction |
| denominator | The number or expression below the fraction bar in a fraction |
| model | Something that helps you to visualize or understand an actual process or object |
| power | An expression that has a base and an exponent |
| numerical expression | A collection of numbers, operations, and grouping symbols |
| order of operations | PEMDAS: A procedure for evaluating an expression involving more than one operation |
| left-to-right rule | Operations having the same priority in an expression are evaluated from left to right |
| grouping symbols | Characters that are used to change the order of operations in an expression or to make an expression clearer: parenthesis, brackets |
| variable | A letter that is used to represent one or more numbers in an algebraic expression |
| value of varible | A number that is represented by the variable |
| algebraic expression | A collection of numbers, variables, operations, and grouping symbols |
| term | A part of an expression that is separated by addition signs |
| substitute | To replace a variable in an expression by a number |
| value of an expression | The number obtained after replacing each variable in the expression by a number and simplifying |
| verbal model | A phrase or sentence used to represent a real-life situation |
| algebraic model | An algebraic expression or equation used to represent a real-life situation |
| polygon | A closed figure whose sides are straight line segments |
| side | One of the straight line segments that make up a polygon |
| vertex | The point at the corner of an angle, plane figure, or solid figure |
| diagonal | A segment that connects two vertices of a polygon and is not a side |
| whole numbers | Any of the numbers in the sequence 0,1,2,3,4,... |
| natural numbers | Any number in the sequence 1,2,3,4,... |
| equivalent expression | Expressions that have the same values when numbers are substituted for the variables |
| distribitive property | a(b+c) = ab + bc |
| like terms | Two or more terms in an expression that have the same variables raised to the same powers |
| collect like terms | A procedure to move like terms next to each other in an algebraic expression |
| equation | A statement that two expressions are equivalent |
| identites | Equations that are true for all values of the variable |
| conditional equations | Equations that are not true for all values of the variables they contain |
| equivalent equations | Equations that have the same solutions |
| integers | The set of numbers ...-3,-2,-1,0,1,2,3,... |
| absolute value | The distance between a number and 0 on a number line |
| absolute value signs | A pair of vertical rules that are used to indicate the absolute value of a number |
| inverse operations | Operations that undo each other |
| coefficients | The numerical factor of an algebraic term. |
| mean | The sum of a set of numbers divided by how many numbers are in the set |
| coodinate plane | A plane formed by two real number lines called axes that intersect at a right angle; a plane used for locating a point whose coordinates are known |
| axes | The two real number lines that intersect at right angles to form a coordinate plane. The horizontal one is the x-axis and the vertical one is the y-axis |
| quadrants | In the coordinate plane, the four parts into which the axes divide the plane |
| ordered pair | A pair of numbers or coordinates used to locate a point in a coordinate plane |
| solution | A number (or ordered pair of numbers)that produces a true statement when substituted for the variable(s) in an equation or an inequality |
