Edexcel As Pure Maths Exam 2024-2025

Quadratic Formula The set of possible inputs for a Domain - answer-function. The set of possible outputs of a Range - answer-function. b - 4ac > 0 then two Discriminant - answer-distinct real roots. b - 4ac = 0 then one repeated real root. b - 4ac < 0 then a quadratic function has no real roots. If y < f(x) Types of Lines for Regions - answer-or y > f(x) then the curve y = f(x) is not included in the region, and is represented by a dotted line. If y f(x) or y f(x) then the curve y = f(x) is included in the region, and is represented by a solid line.-y = f(x) + a is a Graph Translations - answertranslation of the graph y = f(x) by a upwards. y = f(x + a) is a translation of the graph y = f(x) by a to the left. af(x) is a stretch of Graph Stretches - answer-y = the graph y = f(x) by a scale factor of a in the vertical direction. y = f(ax) is a stretch of the graph y = f(x) by a scale factor of 1/a in the horizontal direction. -y