Word  Definition  Examples  

Factoring  Breaking a polynomial equation down into the product of several factors 


Factorial !  n! is the product of all the whole numbers from n down to 1
 used in probability The symbol for factorial is an exclaimation point ! 
3! = 3• 2 •
1 = 6 4! = 4 • 3• 2 • 1 = 24 

Factors  Whole numbers that are multiplied together to equal another number. See Divisibility Rules  2 and 5 are the factors of 10 because 10 = 2 • 5  
Factored Form  A polynomial written as the product of polynomials of lower degree  y = (x + 4)(x  3) is the factored form of y= x^{2} + x  12 

Favorable outcome  In a probability experiment, the possible results you want to happen  When flipping coins and you call heads, a favorable outcome is you getting heads.  
FOIL method  When multiplying two binomials, use the Distributive property repeatedly. F  first terms in each parentheses O  outside terms in each parentheses I  inside terms in each parentheses L  last terms in each parentheses 

Fraction  A ratio of two numbers representing part of a whole. A fraction is a real number. In Algebra, a fraction bar means to divide.  ½ means one half
it also means 1 divided by 2 

Frequency  The number of cycles per unit of time or the reciprocal of the period of the function.  
Foundation drawing  Drawing that shows the base of an object (its foundation) and the height of each part.
Sometimes called an isometric drawing. This example is done on isometric grid paper, much easier to show three dimentions than regular square grid (graphing) paper. 

Function  A relation that assigns exactly one value of the dependent variable to each value of the independent variable  Rule that matches one input to only one answer  y = x + 5 is a function if you pick x = 3 you get one answer, y = 8 

Function notation  A function written using the symbol f(x) in place of y  Another name for a function  a more formal name. Read it as "f of x"  f(x) = 2x + 3 y = 2x + 3 

Future value  In investment problems where interest is earned, the future value is the value of the investment after interest has been earned. 
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