OS 11.9 (a) 5X + OVC (c) At - 7 - 21 (e) Vmx + 5 (0) Ax + By = 0 the characterizing property for each family of lines. (1) ] = f Lan 50° + b live x-intercep(2.0) • (b) 6x + By = 24 (d) y = 4x + b (1) kx + kyk (h) m(x + 2) = y- (1) x=4