Straight Lines.

10 lessons90 min4 simulations

This chapter describes a straight line with algebra. It starts from the distance, section and area formulas of earlier classes, defines the inclination and slope of a line, and uses slopes to test for parallel and perpendicular lines and to find the angle between two lines. It then writes the equation of a line in point-slope, two-point, slope-intercept and intercept form, meets the general equation Ax + By + C = 0, and ends with the distance of a point from a line and the distance between two parallel lines.

Also called: coordinate geometry · slope of a line · equation of a line