**TI83F* AppVariable file 12/24/08, 18:12( GLA202nav 26CE319875DD4F1B9DFDCB650E5220B1GLA202.,GLA2021  absolute value functionbabsolute value function:ÖA function written as Öf(x) = | x |, where Öf(x)  0 for all values of x. bivariate data(bivariate data:ÖData with two variables. boundaryOboundary:ÖA line or curve that separates the coordinate plane into two regions. constant function:constant function:ÖA linear function of the form f(x) = b. continuous relationPcontinuous relation:ÖA relation that can beÖgraphed with a line or smooth curve. correlation coefficient]correlation coefficient:ÖA measure that shows how well data are modeled by a linear equation. dependent variableldependent variable:ÖThe variable in a relation whose value depends on the value of the independent variable. dilationNdilation:ÖA transformation in which a geometric figure is enlarged or reduced.  direct variation†direct variation:Öy varies directly as x ifÖthere is some nonzero constant k such that Öy = kx. k is called the constant of variation.  discrete relationPdiscrete relation:ÖA relation in which theÖdomain is a set of individual points.  dot plotJdot plot:ÖTwo sets of data plotted as ordered pairs in a coordinate plane.  family of graphsVfamily of graphs:ÖA group of graphs that displays one or more similar characteristics.  function notation function notation:ÖA way to name a function that is defined by an equation.ÖExample: In function notation, the equation Öy = 3x - 8 is written asÖf(x) = 3x - 8. greatest integer function}greatest integer function:ÖA step function written as f(x) = Áx], where f(x) is the greatest integer less than or equal to x. identity function)identity function:ÖThe function I(x) = x. independent variable^independent variable:ÖIn a function, the variable, usually x, whose values make up the domain.  line of fit<line of fit:ÖA line that closely approximates a set of data. line of reflectionDline of reflection:ÖThe line over which a reflection flips a figure. linear equation…linear equation:ÖAn equation that has no operations other than addition, subtraction, and multiplication of a variable by a constant. linear functionJlinear function:ÖA function whose ordered pairs satisfy a linear equation. linear inequalityjlinear inequality:ÖResembles a linear equation, but with an inequality symbol instead of an equals symbol. linear relations;linear relations:ÖA relation that has straight line graphs. negative correlation`negative correlation:ÖWhen the values in a scatter plot are closely linked in a negative manner. one-to-one function one-to-one function:Ö1. A function where each element of the range is paired with exactly one element of the domain. Ö2. A function whose inverse is a function.  onto functionQonto function:ÖEach element of the range corresponds to an element of the domain. parallel9parallel:ÖNonvertical coplanar lines with the same slope. parent functionNparent function:ÖThe simplest, most general function in a family of functions.  parent graphSparent graph:ÖThe simplest of the graphs or the anchor graph in a family of graphs.  perpendicularTperpendicular:ÖIn a plane, any two oblique lines, the product of whose slopes is -1. piecewise-defined functionUpiecewise-defined function:ÖA function that is written using two or more expressions. piecewise-linear functionQpiecewise-linear function:ÖLike a step function, it contains a single expression.  point-slope formˆpoint-slope form:ÖAn equation of the form Öy - y1 = m(x - x1), where m is the slope and (x1, y1) is a given point on a nonvertical line.! positive correlation`positive correlation:ÖWhen the values in a scatter plot are closely linked in a positive manner." prediction equationpprediction equation:ÖAn equation suggested by the points of a scatter plot that is used to predict other points.# quadratic function\quadratic function:ÖA function described by the equation Öf(x) = ax^2 + bx + c, where a  0.$ rate of changeorate of change:ÖHow much a quantity changes on average, relative to the change in another quantity, often time.%  reflection{reflection:ÖA transformation in which every point of a figure is mapped to a corresponding image across a line of symmetry.& regression line$regression line:ÖA line of best fit.'  scatter plotÑ!Kscatter plot:ÖA set of data graphed as ordered pairs in a coordinate plane.( slopet!¥slope:ÖThe ratio of the change in the y-coordinates (rise) to the corresponding change in the x-coordinates (run) as you move from one point to another along a line.) slope-intercept formsslope-intercept form:ÖThe equation of a line inÖthe form y = mx + b, where m is the slope and b isÖthe y-intercept.*  standard formstandard form:Ö1. A linear equationÖwritten in the form ÖAx + By = C, where A, B, and C are integers whose greatest common factor is 1, A  0, and A and B are not both zero. Ö2. A quadratic equation written in the form Öax^2 + bx + c = 0, where a, b, and c are integers, and a  0.+  step functionWstep function:ÖA function whose graph is a series of disjointed steps or line segments.,  translation…translation:ÖA figure is moved from one location to another on the coordinate plane without changing its size, shape, or orientation.- vertical line testIvertical line test:ÖA test used to determine if a relation is a function..  x-interceptEx-intercept:ÖThe x-coordinate at which a graph intersects the x-axis./  y-interceptEy-intercept:ÖThe y-coordinate at which a graph intersects the y-axis.8`HH>8p <<€ € € ƒÀ ƒÃÌ0 ÃÁžx Á€x € 0ˆ€0ÈÀx€ÈÀxÀˆ€0ÀÁ€`àðàðÀ``Èð`<èðð<è`ðÈ`@Àÿÿÿÿÿÿÿÿ€À€@È€(<(<(È>8`! q øà !Àp 0 Ð < p80 À < à0 Àp RÀ ’ à2 ’ Â Œ c ü@žyçŸðªXf@ ଒Š@ ¨’Š@ Fše  0  È ‚ ÿÿÿÿÿÿÿÿÿÿþ  Ž €  0à Á43€"#FR›!RlERª J`ñÀà5*™„I@ ñ J2aÀ0  ! 0!ÀÀ ÎyÎsœæ 0$\€€Á€$1ÌÌ€@&JI*”€,À%JQ*”€0@u2\ÊÊ@8@ € †`P ÊS`øªU@p¥S0 Àn