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Pre-Algebra Ch. 7

constant of variation the slope, or rate of change, in the equation y=ks, represented by k
constant rate of change when the rate of change between any two data points in a linear relationship is the same or constant
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
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
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
linear relationship relationships that have straight line graphs
rate of change a change in one quantity with respect to another quantity
slope the ratio of the rise, or vertical change, to the run, or horizontal change/ describes the steepness of the line
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
y-intercept the y-coordinate of a point where a graph crosses the y-axis
Created by: Miss Brinkoetter