# Math Vocabulary - F

Word Definition Examples
Factoring Breaking a polynomial equation down into the product of several factors
 y = x2 - 3x + 2 Original problem y = (x - 2)(x - 1) Factored form
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= x2 + 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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Last Updated: 06/26/2014