Term
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Definition
| a pair of coordinates, written in the form (x,y), used to locate any point on a coordinate plane |
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| Cartesian coordinate plane |
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Definition
pg. 58
A plane divided into four quadrants by the intersection of the x-axis and the y-axis at the origin |
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| the four areas of a Cartesian coordinate plane |
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Definition
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| The set of all x-coordinates of the ordered pairs of a relation. |
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| The set of all y-coordinates of a relation. |
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Definition
| A relation in which each element of the domain is paired with exactly one element in the range. |
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Definition
| How each member of the domain is paired with each member of the range. |
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Definition
| 1. A function where each element of the range is paired with exactly one element of the domain. 2. A function whose inverse is a function. |
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Definition
A relation in which the domain is a set of individual points
p. 59 |
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Definition
A relation that can be graphed with a line or smooth curve
p. 59 |
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Definition
If no vertical line intersects a graph in more than one point, then the graph represents a function
p. 59 |
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Definition
In a function, the variable, ususally x, whose values make up the domain.
p. 61 |
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Definition
The other variable in a function, usually y, whose values depend on x.
p. 61 |
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Definition
An equation of y in terms of x can be rewritten so the y = f(x). For example, y = 2x + 1 can be written as f(x) = 2x + 1
p. 61 |
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Definition
An equation that has no operations other than addition, subtraction, and multiplication of a variable by a constant.
p. 66 |
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Definition
A linear equation written in the form Ax + By = C, where A, B, and C are integers whose greatest common factor is 1, A if greater than or equal to ), and A and B are not both zero
p. 67 |
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Definition
The y-coordinate of the point at which a graph crosses the y-axis
p. 68 |
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Definition
The x-coordinate of the point at which a graph crosses the x-axis
p. 68 |
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Definition
How much a quantity changes on average, relative to the change in another quantity, often time.
p. 71 |
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Definition
The ratio of the change in y-coordinates to the change in x-coordinates
p. 71 |
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Definition
The equation of a line in the form y = mx + b, where m is the slope and b is the y-intercept
p. 79 |
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Definition
An equation in the form y - y1 = m(x - X1) where (x1, y1) are the coordinates of a point on the line and m is the slope of the line.
p. 80 |
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Definition
Data with two variables
p. 86 |
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Definition
A set of data graphed as ordered pairs in a coordinate plane.
p. 86 |
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A line that closely approximates a set of data.
p. 86 |
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An equation suggested by the points of a scatter plot that is used to predict other points.
p. 86 |
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Definition
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Definition
A line that best matches a set of data
p. 92 |
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| linear correlation coefficient |
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Definition
A value that shows how close data points are to a line
p. 92 |
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Definition
A function whose graph is a series of line segments
p. 95 |
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| greatest integer function |
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Definition
A step function, written as f(x) = [[x]], where f(x) is the greatest integer less than or equal to x
p. 95 |
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Definition
A linear function of the form f(x) = b.
p. 96 |
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Definition
A function written as f(x) = [x], where f(x) is greater than or equal to 0 for all values of x
p. 96 |
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Definition
The function 1(x) = x
p. 96 |
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Definition
A function that is written using two or more expressions
p. 97 |
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Definition
A line or curve that separates the coordinate plane into two regions
p. 102 |
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