DHS - 3.2
№1.9. The vertices ∆ABC are given: A (4; –4); B (8; 2); C (3; 8). Find: a) Equation side AB; b) Equation of height CH; c) the median AM equation; d) the intersection point N of the median AM and the height of the SN; e) the equation of a straight line passing through the vertex C and parallel to the side AB; e) distance from point C to straight line AB.
№2.9. Find a point symmetric to the point M (2; –1) with respect to the straight line x - 2y + 3 = 0.