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Definition
a constant function is a function that is written y = k, where k is a real number. The y value is constant for all values of x. The graph of a constant function is a horizontal line. 


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Definition
the description of the relationship between two data 


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Definition
a relation (set of ordered pairs) such that each x value is associated with only one y value. 


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the line that best represents the trend established by the points in a particular scatter plot. 


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Definition
the graph of a collection of ordered pairs. 


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Definition
the steepness of a line, which may be calculated by finding the ratio of the difference between the y values of two points on the line to the difference between the corresponding x values of those two points on the line. 


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Definition
one way to write an equation of a line; uses the form y = mx + b, where m is the slope and b is the yintercept. 


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the point where a line crosses the xaxis 


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the point where a line crosses the yaxis 


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Definition
a way to write the equation of a line Ax + By = C where A, B, and C are all integers 


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Definition
a horizontal line is written in the form y = b and has a slope of zero 


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Definition
a vertical line is written in the form x=a and has a slope of undefined 


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Definition
y_{2} y_{1} x_{2 } x_{1} 


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Definition


Term

Definition
a sequence of numbers in which the difference between any two consecutive terms is the same. 

