###
Compound Inequality

a pair of inequalities combind by the words and or or

###
Correlation Coefficient

A number represented by the variable r, between -1 and 1, that describes how closely points in a scatter plot cluster around the least-squares line

###
direct variation

the equation y=kx describes a direct variation, where y varies directly as x, k is constant of variation, and k doesn't equal 0

###
literal equation

an equation that contains two or more variables

###
slope-intercept form

a linear equation in the form y=mx+b

###
standard form of a line

the standard form of a linear equation is Ax+By=C

###
x-intercept

the x-coordinate of the point where the graph of a line crosses the y-axis

###
y-intercept

the y-coordinate of the point where the graph of a line crosses the y-axis

###
dependent variable

the output of a function

###
independent variable

the input of a function

###
domain

the set of possible values for the first coordinate of a function

###
range

the set of possible values for the second coordinate of a function

###
rational numbers

a number that can be expressed as the quotient of two integers, where the denominator is not equal to zero

###
irrational numbers

a number whose decimal part does not terminate or repeat

###
relation

any set of ordered pairs

###
function

a relation in which, for each first coordinate, there is exactly one corresponding second coordinate

###
vertical-line test

if a vertical line crosses the graph of a relation in more than on point, the relation is not a function

###
consistent system

a system of equations or inequalities that has at least one solution

###
inconsistent system

a system of equations or inequalities that has no solution

###
system of equations

a set of equations in the same variables

###
Imaginary Unit

the unit in the imaginary number system, √-1

###
Discriminant

b^2-4ac, of ax^2+bx+c

###
Parabola

the graph of a quadratic function

###
Quadratic Formula

gives solutions to the quadratic equation ax^2+bx+c

###
Rationalizing the denominator

the process of removing an imaginary number from the denominator of a quotient

###
Standard Form

a quadratic equation is Ax+By=C

###
Vertex Form

a(x-h)^2+k, when the coordinates of the vertex are (h,k)

###
Vertex of Parabola

Either the lowest point on the graph or the highest point on the graph

###
Axis of Symmetry of a Parabola

a line that divides the parabola into two parts that are mirror images of each other

###
complex number

any number that can be written as a+bi , where a and b are real numbers and i=root of -1

###
asymptote

a line that a curve approaches (but does not reach) as its x- or y-values become very large or very small

###
common logarithm

a logarithm whose base is 10

###
Continuous Compound Interest Formula

A=Pe^rt

###
Exponential Expression

an algebraic expression in which the exponent is a variable and the base is a fixed number

###
Natural Logarithm

the function y=log (subl)x, the inverse of the natural exponential function

###
binomial

a polynomial with exactly two terms

###
coefficient

the numerical factor of a monomial

###
constant

a monomial with no variables

###
end behavior

what happens to a polynomial function as its domain values get very small and very large

###
leading coefficient

the coefficient of the term with the highest degree

###
local maximum or minimum

the highest or lowest point of a graph of a function

###
monomial

a numeral, variable, or product of a numeral and one or more variables

###
multiplicity

the number of times that a factor is repeated in the factorization of a polynomial expression

###
polynomial

a monomial or a sum of terms that are monomials

###
roots

solutions to an equation

###
standard form

of a linear equation is Ax+By=C where A and B both are not 0

###
trinomial

a polynomial with 3 terms

###
turning points

the points on the graph of a polynomial function that correspond to local maxima and minima

###
extraneous solution

a solution to a derived equation that is not a solution to the original equation

###
holes in the graph

if the factor x-b is a factor of both the numerator and denominator of a rational function

###
asymptote

a line that a curve approaches but does not reach as its x or y values become very large or very small

###
amplitude

one-half the difference between the max. and min. function values, always postivie

###
coterminal angle

describes angles that have the same terminal side when in standard position

###
reference angle

the positive acute angle formed by the terminal side of the angle and the nearest part (positive or negative) of the x-axis

###
period

the smallest positive number p that satisfies the equation in the definition of a periodic function

###
law of sines

sinA/a=sinB/b=sinC/c

###
law of cosines

a^2=b^2=c^2-2bccosA, etc.

### Please allow access to your computer’s microphone to use Voice Recording.

## We can’t access your microphone!

### Click the icon above to update your browser permissions above and try again

Example:

### Reload the page to try again!

Reload

## Press Cmd-0 to reset your zoom

## Press Ctrl-0 to reset your zoom

### It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

## Your microphone is muted

### For help fixing this issue, see this FAQ.