Write down the equation of a line parallel to x - 2y + 8 = 0 and passing through the point (1, 2).

Given equation of line, x - 2y + 8 = 0. Converting in the form of y = mx + c, ⇒ 2y = x + 8 ⇒ y = Comparing we get, Slope = Line parallel to x - 2y + 8 = 0 will have the same slope. Equation of the line having slope and passing through (1, 2) can be given by point-slope form i.e., Hence, the equation of the required line is x - 2y + 3 = 0.