VIDEO #44B, pp. 133-134

Coordinate Geometry (Plotting, Points, Slopes, Equations)
Reading & "Coordinating" Locations on your Air Traffic or Police Radar Screens. Charting Your "Flight Plan Equations" Using Tic, Tac, Toe "Two Zeros and You Win" The x.y. intercepts! "Passengers & Partners!" Computing Slopes Using Rise Over Run and Up is Positive, Down is Negative