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set of pairs of input and output values (ordered pairs) 


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shows relations by linking elements of the domain with the coressponding elements of the range 


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graph determining if a relation is a function 


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representation of linear function 


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the point at which the line crosses at the yaxis 


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the point at which the line crosses the xaxis 


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nonvertical line is the ratio of the vertical change to a coressponding horizontal change 


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yy(sub1) = m (x  x(sub1)) 


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linear function defined by an equation of the form y = kx, k does not = 0 


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when x = constant k (k=y/x) 


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graph that relates 2 different sets of data by plotting the data as ordered pairs 


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simples function when the equations of the functions resemble each other (translations, stretches, shrinks) 


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shifts graph horizontally, vertically, or both 


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and inequality in 2 variables whose graph is a region of the coordinate plane that is bounded by a line. 

