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line of best fit
a line drawn in a scatter plot to fit most of the dots and shows the relationship between the two sets of data
is something that allows you to describe graphically whether a relation is a function.
y-y1 = m(x-x1), where m is the slope and (x1,y1) is the point the line is passing through.
standard form of a linear equation
Ax + By = C, where A,B, and C are real numbers, and A and B are not both zero.
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