AS91256, Apply Coordinate Geometry Methods in Solving ProblemsAS91256 is a Year 12, Level 2 Achievement Standard worth 2 credits towards NCEA. This 40 page booklet provides a number of situations and problems that require you to find distances, lengths, gradients, midpoints, equations and perpendiculars. To gain achievement in this standard requires you to understand all of these processes. To gain a merit grade requires you to carry out a sequence of steps that link together these different concepts. To gain an excellence grade requires extended abstract thinking. You should be able to explain the logic behind any answers you produce and be able to justify them with appropriate mathematical statements. Quite often you will need to use algebra to prove your answer. The questions in this booklet contain scope for all of the Achievement, Merit and Excellence type questions. There are many worked examples with lots of hints and tips. Full answers are supplied. The booklet will help you approach this achievement standard with confidence no matter what grade you want.