A line in the plane can be specified in various ways: By giving a point (x,y) and a slope m (You DON'T NEED the Point Class) by giving two Points (x1,y1), (x2,y2) (You DON'T NEED the Point class.) as an equation in slope intercept form y = mx+b as an equation x=a if the line is vertical Implement a class Line with four constructors, corresponding to the four cases above. Implement methods: boolean intersects (Line other) boolean equals(Line other) boolean isParallel(Line other).