Grade 9 MATHEMATICS Quarter 1 – Module 4: Quadratic Equations and Inequalities Lesson 1: Solving Problems Involving Quadratic Equations Grade 9 Mathematics: Quadratic Equations and Inequalities EASE Module 10 Guess, Try and Check EASE Module 2 Systems of Linear Equations and Inequalities EASE Module 4 Systems of Liner Equations and Inequalities Method in Solving Linear Equations and Inequalities in One Variable Problems Involving Equations and Inequalities in One Variable Learning Exemplar Module 7 - Math - Solving Problems Involving Ratio and Proportion DLM 2 – Unit 1: Systems of Linear Equations and Inequalities