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28 Cards in this Set
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solve

e.g. for variable in equation

evaluate

the expression

simplify

e.g. by combining like terms

relation

set of ordered pairs

standard form

Ax + By = C

mapping diagram

shows how domain is paired with range

domain

relation of set of all first coordinates (Xs)

range

relation of set of all second coordinates (Ys)

slope formula

x^2x^1/y^2y^1

constant of variation

k in 'y=kx'

greatest integer function

f(x)=[a] <greatest integer no greater than function

[3.2]

3

step functions

look like steps on graph, greatest integer function is subset of these

[3.4]

4

You are given a table of values. How do you know if its a direct variation or not? How can you tell what the constant of variation is?

constant of variation = y/x
direct variation if constant of variations are all same in every ordered pair and passes through origin 
consistent dependent system

infinite amount of solutions
same line {(X,Y)  y=mx+b} e.g. when solving, yield 0=0 
graphically, solution to system of equations in three variables

intersection of three planes

consistent independent system

unique solution

inconsistent system

no solutions
parallel null set 
integers

{...2, 1, 0, 1, 2...}

whole numbers

{0, 1, 2, 3, 4, 5...}

digits

{0, 1, 2, 3, 4, 5, 6, 7, 8, 9

rational numbers

terminate or repeat

irrational numbers

do not terminate or repeat

real numbers

are basically everything

imaginary numbers

just don't work

linear programming method

1) Identify variables.
2) Make constraint inequalities. 3) Graph these. (Simplify y if needed) 4) Find corners of intersection. These are the vertices of the feasible region 5) Make an objective function. P(x,y) = __x + __y 6) Plug in the ordered pairs of the corners. 7) The highest amount yielded is the optimum. 
feasible region

optimum for both variables
