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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.