15.1 Junior form Coordinate Geometry
15.2 Vertical line and Horizontal line
15.3 Point-slope Form
15.4 Slope-intercept Form
15.5 Slope and Intercept
15.6 Parallel lines and Perpendicular lines
15.7 No. of points of intersection of 2 st. lines
15.8 the Coordinates of the Point of Intersection of two straight lines
