Maths Library United States Grade 9 Grade 9 math, age 14 to 15 In Grade 9, students typically take Algebra I or an integrated equivalent, focusing heavily on linear, quadratic, and exponential relationships. They manipulate expressions, solve multi-step equations and inequalities, and explore coordinate geometry and functions. Foundations in data analysis, basic exponents, and real number systems are also solidified.
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Equivalent levels Topics Number Algebra Statistics Curriculum items Indicative, from Common Core State Standards. See the official document for the authoritative text.
Explain how radical expressions relate to rational exponents using the properties of integer exponents. Use the structure of an expression to identify ways to rewrite it, such as factoring quadratic and polynomial expressions. Create equations and inequalities in one variable to model relationships and solve contextual problems. Solve linear equations and inequalities in one variable, including those with coefficients represented by letters. Solve quadratic equations in one variable using factoring, square roots, or the quadratic formula. Solve systems of linear equations exactly and approximately using algebraic and graphical methods. Construct linear and exponential functions given a graph, a description of a relationship, or two input-output pairs. Compare center and spread of two or more different data sets using statistics such as median, mean, and range. Previous: Grade 8 | Next: Grade 10