Algebra · Grade 9

34/34 weeks ready · Sh.A. Alimov, A.R. Xalmukhamedov, M.A. Mirzaakhmedov. Algebra: textbook for Grade 9 of general secondary schools. Revised 4th edition. Tashkent: “O‘qituvchi”, 2019

ReviewGrade 8 course

Reviewing the Grade 8 course

Chapter IQuadratic function. Quadratic inequalities

The quadratic function and y = x²

The function y = ax²

The function y = ax² + bx + c

Graphing a quadratic function

Quadratic inequality and its solution

Solving a quadratic inequality by the graph

The method of intervals

Domain of a function

Increasing and decreasing functions

Even and odd functions

Inequalities and equations with powers

Chapter IISystems of equations and inequalities

Simple systems with a second-degree equation

Different methods of solving systems

Systems of second-degree inequalities

Proving simple inequalities

Chapter IIIElements of trigonometry

Radian measure of an angle

Rotating a point about the origin

Definitions of sine, cosine, tangent and cotangent

Signs and basic relations

Trigonometric identities

Trigonometric functions of α and −α

Addition formulas

Double-angle and reduction formulas

Sums and differences of sines and cosines

Chapter IVNumber sequences. Progressions

Chapter VElements of probability theory and mathematical statistics

Events and probability

Relative frequency and random variables

Numerical characteristics

Final reviewGrade 9 course

Grade 9 Algebra review