## algebra chapter 9

##### Created by:

shakabrah26  on April 1, 2012

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# algebra chapter 9

 boundarya line that separates a graph into half-planes
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#### Definitions

boundary a line that separates a graph into half-planes
coordinate plane the number plane formed by two perpendicular number lines that intersect at their zero points
domain the domain of a relation is the set of all first components from each ordered pair
function a function is a relation in which each element of the domain is paired with exactly one element of the range
functional notation the functional notation of the equation y = x + 5 is f(x) = x + 5
functional value the symbol f(3) represents the functional value of f for x = 3
graph to graph an ordered pair means to draw a dot at the point on a coordinate plane that corresponds to the ordered pair
half-plane the region of a graph on one side of a boundary
inverse of a relation the inverse of any relation is obtained by switching the coordinates in each ordered pair of the relation
linear equation a linear equation is an equation that may be written in the form Ax + By = C
mapping a mapping illustrates how each element of the domain is paired with an element in the range
ordered pair in mathematics, pairs of numbers used to locate points in the plane
origin the point of intersection of the two axes of the coordinate plane
quadrant one of the four regions into which two perpendicular number lines separate the plane
range the range of a relation is the set of all second components from each ordered pair
relation a set of ordered pairs
x-axis the horizontal number line which helps to form the coordinate plane
x-coordinate the first component of an ordered pair
y-axis the vertical number line which helps to form the coordinate plane
y-coordinate the second component of an ordered pair

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