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Algebra Class Vocabulary

Page history last edited by Erika Rosales 12 years, 4 months ago

Absolute Value

-The distance between zero and the point representing a real number on the number line 


Algebraic Model

-An expression, equation or inequality that uses variables to represent a real-life situation


Angle of Depression

-When you look down at an object, the angle that your line of sight makes with a line drawn horizontally


Angle of Elevation

-When you look up at an object, the angle your line of sight makes with a line drawn horizontally


Assosiative Property

-of Addition

     -The way three numbers are grouped when adding does not change the sum

-of Multiplication

     -The way three numbers are grouped when multiplying does not change the product



-If a term of an expression consists of  a number multiplied by one or more variables, the number is the coefficient of the term



-a form of payment to an agent for services rendered


Commutative Property

-of Addition

     -The order in which two numbers are added does not change the sum

-of Multiplication

     -The oder in which two numbers are multiplied does not change the product



-the same shape and size, but are in different positions (for instance one may be rotated, flipped, or simply placed somewhere else). 


Coordinate Plane

- The coordinate system formed by two real number lines that intersect at a right triangle



-Information, facts or numbers used to describe something



-(See output)


Direct Variation

-In a direct variation slope-intercept forn is being used but the y intercept is 0




Distributive Property

-For any real numbers a, b, and c, a(b+c) = ab + ac


Down Payment

-An initial amount paid at the time of purchase, in installment buying, time sales


Direct Variation

-A constant ratio



-The line where two faces meet on a geometric figure



-A statement formed by placing an equal sign between two expressions


Evaluate an expression 

-Find the value of an expression by substituting a specific numerical value for each variable, and simplifying the result



-In exponential notation, the number of times the base is used as a factor



-The front, back, top, down, and sides of a geometric figure



-When you have anumber with an exclamation sign after it, you have to multiply the number by all the natural numbers less than it



-An algebraic equation that relates two or more variables



-A realation is a function if each input has ONE & ONLY ONE output


Function Form

-A two variable equation is written in function form if one of its variables is isolated on one side of the equation


Function Notation 

-When f(x) is substituted for y. f can be any letter



-(See output) Pronounced f of x


Identity Property

-of addition

     -The sum of a number and 0 is the number

-of multiplication

     -The product of a number and 1 is the number



-(See input)


Infinetly Many Solutions

-one line on top of another



-A value in the domain of a function

Synonym: X, independent, domain, input


Input-output table

-A table used to describe a function by listing the outputs for several different inputs



-The numbers ...-3,-2,-1,0,1,2,3,...


Inverse Property of addition

-The sum of a number and its opposite is zero


Inverse Property of multiplication

-The product of a number and its reciprocal is one


Least Common Denominator, LCD

-The least common multiple of the denominators of two or more fractions


Line Graph

-A graph that uses line segments to connect data points



-to fix the selling price of an object by adding to the seller's cost an amount to cover expenses and profit


Natural numbers

-The numbers 1,2,3,4...


No Solution

-Parallel lines


Numerical expression

-An expression that represents a certain number


One Solution

-Intersecting lines



-A value in the range of the function

Synonym: Y, output, dependent, f(x), range


Order of Operations

-The set of rules(PEMDAS) that is used to solve an equation


Parallel lines

-two lines that are next to eachother that never meet


Perpendicular lines

-Two lines that intersect at a 90° angle


Point slope form

- y- y¹ = m(x - x¹)


Pythagorean theorem

- a²+b²=c²


Pythagorean triples

 for example the length of a right triangles sides (3,4,5) that satifys the eqution a for a list of more pythagorean triples click herehttp://coxmath.pbwiki.com/pythagorean-triples


Property of Equality


     -Any number added to one side of the equation must be added to the other side


     -Any number substracted from one side of the equation must be substracted from the other side


     -Any number multiplied to one side of the equation should be multiplied to the other side


     -Any number divided in one side of the equation should be divded on the other side



-(See output)


Rational numbers 

-Numbers that terminate or repeat



-Any set of ordered pairs



-the sale of goods to buyers, usually in small quantities


Skew lines

-Two lines that are on opposite sides of a geometric figure that never meet, but asre neither parallel or perpendicular


Slope intercept form

-A formula that shows the slope and y-intercept

-It is in the form y=mx+b


Slope point form

-The formula y-y1 = m( x1) 

-It is used when you have the slope and one point or when you have two points 

Solve a Right Triangle

-To find the measures of all of the sides and angles of a right triangle


Standard Form


-A,B, and C are integers

-No Fractions


Symmetric Property

-If a=b then, b=a


Transitive property

-If a=b and b=c, then a=c


Trigonometric ratio

-a ratio of the lengths of two sides in a right triangle


Variable expression

-An expression that has variables



-The point where two lines intersect on a geometric figure


Whole numbers 

-all real numbers including zero


Whole Sale

-The sale of goods in quantity, as to retailers or jobbers, for resale





If you would like to add an important word, follow the format & do NOT add colors, hi-lite, or put turtles!!


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