2. Find the equation of the line (a) whose slope is - 0.5 and which passes through the point (4, -8); (b) which passes through the points (2, 6) and (4, 1); (c) whose y-intercept is 12 and whose slope is - 2; (d) which passes through (5, 1) and whose slope is Answers: (a) (c) ( b ) Solution