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24 Cards in this Set
- Front
- Back
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Ordered pairs
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(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. |
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Cartesian coordinate plane
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a plane divided into 4 quadrants by the intersection of the x-axis and the y-axis at the origin.
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relation
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a set of ordered pairs.
(12,28) (13,3) |
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domain
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(x-coordinates)
the set of all x-coordinates of the ordered pairs of relation. |
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Range
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(y-coordinates)
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linear eqaution
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An eqaution that has no operations other than addition, subtraction, and multiplication of a variable by a constant.
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linear function
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5x-3x=7 x=9 6s=3t-15 y=1/2x
a function whose ordered pairs satisfy a linear equation. |
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standard form
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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. |
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rate of change
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how much a quantity changes on averages, relative to the change in another quantity, often time.
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slope
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Y2-Y1/X2-X1
the ratio of the change in y-coordinates into the change in x-coordinates. |
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Slope-intercept form
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y=mx+b
m is the slope and b is the y-intercept. |
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point-slope form
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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. |
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Bivariate data
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Data with two variables, such as speed and Calories
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Scatter plot
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a set of data graphed as ordered pairs in a coordinate palne.
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line of fit
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A line that closely approximates a set of data.
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prediction equation
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a line of fit, because it can be used to predict one of the variables given the order variable.
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Linear correlation coefficient
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r=
A value that shows how close a data points are to a line. |
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step function
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A function whose graph is a series of a line segments.
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greatest interger function
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A step function, written as
f(x)=[x], where f(x) is the greatest integer less than or = to x |
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Constant function
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a linear function of the form
f(x)=b |
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absolute value function
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f(x)=[x]
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identity function
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f(x)=x
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piecewise function
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-x if x<0 and x if x≥0
A function that is written using 2 or more experssions. |
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Boundary
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a line or curve that separates the coordinate plane into two region.
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