No. 1 Given are the vertices ∆ABC: A (1; –2); In (7; 1); C (3; 7). Find: a) The equation of the side AB; b) Equation of height CH; c) the equation of the median AM; d) the point N of the intersection of the median AM and the height of the CH; d) the equation of a line passing through the vertex C and parallel to the side AB; e) the distance from point C to line AB.

№2 Find the equation of a line passing through point A (2; –3) and the intersection point of lines 2x - y = 5 and x + y = 1.