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Given two Points p1 and p2, return the slope of the line defined by the two points. If the line is vertical the slope is not defined and...
X674: Slope
Given two Points p1 and p2, return the
slope of the line defined by the two points.
If the line is vertical the slope is not defined
and your routine should return Double.NaN.
Beware, integer division truncates the result.
Examples:
slope(new Point(10,10),new Point(100,100)) -> 1.0
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