How is the two point formula used to find the equation of a line when 2 points are known?

With two points, first find the slope by dividing the change in y-values by the change in x-values: (y₂ − y₁)/(x₂ − x₁). This is choice A, “taking the change in y over the change in x.” The slope can then be used with either point to write the equation of the line.

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