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Chapter 1 Vocab Words
set 1
42
Mathematics
11th Grade
09/05/2007

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Term
absolute value function
Definition
a piecewise function; non negative
Term
abscissa
Definition
the first element of an ordered pair
Term
boundary
Definition
a line or curve that seperates coordinate plane into two
Term
coinciding lindes
Definition
the graph of two equations that represent the same line
Term
composite
Definition
with functions (g + f)= composite function is [f o g] (x) = f(g(x))
Term
composition of function
Definition
see composite
Term
constant function
Definition
a function in the form of f(x)=b
Term
domain
Definition
the set of all absissas of the ordered pairs of a relation.
Term
family of graphs
Definition
group of graphs that displays 1 or more similiar characteristics
Term
function
Definition
relation in which each element of the domain is paired with exactly one range element
Term
function notation
Definition
an equation of y in terms of x rewritten so y=f(x)
Term
greatest integer
Definition
step function written as f(x)= [x], where f(x) is the greatest integer not greater than x
Term
half plane
Definition
the 2 regions on a coordinate graph seperated by the graph of y=mx+b
Term
iterate
Definition
each output of an interated function
Term
iteration
Definition
composition of a function and itself
Term
linear equation
Definition
an equation in the form of Ax+Bx+C=0 where A and B are both not 0
Term
linear function
Definition
a function defined by f(x)=mx+b where M and B are real numbers
Term
ordinate
Definition
the 2nd element of an ordered pair
Term
parallel lines
Definition
nonvertical coplanar lines that have equal slopes ; any two coplanar vertical lines
Term
linear inequality
Definition
a relation whose boundary is a straight line
Term
perpendicular lines
Definition
nonvertical lines, the product of whose slopes is -1; any vertical line and horizontal line
Term
piecewise function
Definition
a function in which different equations are used for different intervals of the domain.
Term
point slope form
Definition
the equation of the line that contains the point with coordinates (x,y) and having slope M in the form of Y-Y1=M(X-X1)
Term
range
Definition
difference in the greatest and least value in a set of data
Term
range
Definition
difference of the greatest and least value in a set of data
Term
relation
Definition
a set of ordered pairs
Term
slope
Definition
ratio of the change in ordinates of point to corresponding abscissas
Term
slope intercept form
Definition
equation of a line with slope, M, and Y intercept B, written in the form y=MX+B.
Term
standard form
Definition
linear equation written in form AX+BY+C=0 where A,B, and C are real numbers and A and B are both not zero
Term
step function
Definition
a function whose graph is a series of disjoint lines or steps.
Term
vertical line test
Definition
a test used to determine if a relation is a function
Term
x intercept
Definition
the x coordinate of the point at which the graph of an equation crosses the x axis
Term
y intercept
Definition
the y coordinate of the point at which the graph of an equation crosses the y axis
Term
zero of a function
Definition
a value for X which f(x)=0
Term
best fit line
Definition
the graph of a prediction equation
Term
correlation coefficient
Definition
a value that describes the nature of a set of data. the more closely the data fit a line, the closer the correlation coefficient ,r, approaches 1 or -1.
Term
goodness of fit
Definition
the degree to which data fits a regression line
Term
model
Definition
an equation used to approximate a real world set of data
Term
pearson product moment correlation
Definition
the correlation used to find correlation coefficients on a graphing calculator
Term
prediction equation
Definition
an equation suggested by the points of a scatter plot used to predict other points
Term
regression line
Definition
a best fit line
Term
scatter plot
Definition
a visual representation of data
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