The slope of the line given the points is calculated through the equation, m = (y2 - y1) / (x2 - x1) Substituting the known values, m = (6 - 6) / (-2 - 4) = 0 The slope of the given line is equal to 0 which means that it is a horizontal line.
There is a 1/4 chance of getting the Blue Marble out of the bag. But when it is 2 in a row you have to multiply your chances so it would be 1/4 * 1/4 or 1/16
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