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### 24 Cards in this Set

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 Ordered pairs (12,28) or (x,y) a pair of coordinates, written in the form of (x,y), used to locate any point on a coordinate plane. Cartesian coordinate plane a plane divided into 4 quadrants by the intersection of the x-axis and the y-axis at the origin. relation a set of ordered pairs. (12,28) (13,3) domain (x-coordinates) the set of all x-coordinates of the ordered pairs of relation. Range (y-coordinates) linear eqaution An eqaution that has no operations other than addition, subtraction, and multiplication of a variable by a constant. linear function 5x-3x=7 x=9 6s=3t-15 y=1/2x a function whose ordered pairs satisfy a linear equation. standard form Ax+By=C a linear equation written in the form Ax+By=C, Where A,B,and C r integers whose greatest common factor is 1,A≥0, and A and B r not both zero. A,B,and C r integers, and a≠0. rate of change how much a quantity changes on averages, relative to the change in another quantity, often time. slope Y2-Y1/X2-X1 the ratio of the change in y-coordinates into the change in x-coordinates. Slope-intercept form y=mx+b m is the slope and b is the y-intercept. point-slope form Y-Y1=m(x-x1) an eqaution in the form (y-y1)=m(x-x1) where (x1,y1) r the corrdinates of a point on the line and m is the slope of the line. Bivariate data Data with two variables, such as speed and Calories Scatter plot a set of data graphed as ordered pairs in a coordinate palne. line of fit A line that closely approximates a set of data. prediction equation a line of fit, because it can be used to predict one of the variables given the order variable. Linear correlation coefficient r= A value that shows how close a data points are to a line. step function A function whose graph is a series of a line segments. greatest interger function A step function, written as f(x)=[x], where f(x) is the greatest integer less than or = to x Constant function a linear function of the form f(x)=b absolute value function f(x)=[x] identity function f(x)=x piecewise function -x if x<0 and x if x≥0 A function that is written using 2 or more experssions. Boundary a line or curve that separates the coordinate plane into two region.