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put this solution on YOUR website!The formula for the slope of a line is (y2-y1)/(x2-x1). Let {1,2} be the point {x1,y1} and let {4,3} be the point {x2,y2}. Then the slope is (3-2)/(4-1) = 1/3. This means that for every one unit of rise (vertically) there is 3 units of run (horizontally)