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Given Two Points

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Lesson Description:

Students learn to write the equation of a line given two points on the line, by first finding the slope of the line using the slope formula, m = (y2 - y1)/(x2 - x1), then substituting the slope and one of the given points into the point-slope formula, y - y1 = m(x - x1). Note that x-intercepts and y-intercepts are points. For example, an x-intercept of 2 is the point (2, 0) and a y-intercept of 2 is (0, 2).