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Pre-Algebra Ch. 7

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
constant of variation   the slope, or rate of change, in the equation y=ks, represented by k  
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constant rate of change   when the rate of change between any two data points in a linear relationship is the same or constant  
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direct variation   a special type of linear equation that describes rate of change/ a relationship such that x increases in value, y increases or decreases at a constant rate  
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line of fit   on a scatter plot, a line drawn that is very close to most of the data points/ the line that best fits the data  
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linear equation   an equation in which the variables appear in separate terms and neither variable contains an exponent other than 1/ the graph of this is a straight line  
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linear relationship   relationships that have straight line graphs  
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rate of change   a change in one quantity with respect to another quantity  
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slope   the ratio of the rise, or vertical change, to the run, or horizontal change/ describes the steepness of the line  
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vertical line test   if any vertical line drawn on the graph of a relation passes through no more than one point on the graph for each value of x in the domain, then the relation is a function  
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y-intercept   the y-coordinate of a point where a graph crosses the y-axis  
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Created by: Miss Brinkoetter
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