About This Set

Most questions in this set take two steps: a ratio and then the point it gives, a midpoint and then a missing vertex, a slope and then the line perpendicular to it, or the corners of a region and then its area. Three errors cost the most marks: a section ratio turned the wrong way round (in m:nm : n, the mm goes with the second point), the area formula used without its 12\frac{1}{2}, and a perpendicular slope written as −m-m or 1m\frac{1}{m} rather than −1m-\frac{1}{m}. Plan on 25 to 30 minutes; at 19 correct or better, move to Practice Set 3.