Mathematics

Mathematics — Grade 9

American Curriculum · Ages 14-15

Grade 9 typically means Algebra I, though the exact course depends on the student's track: some students take Algebra I in Grade 8 and move to Geometry in Grade 9 instead. Algebra I covers linear equations and inequalities, systems of equations, exponent rules, an introduction to polynomials, and a first treatment of quadratic equations.

Functions are treated more formally than in middle school, alongside data analysis and interpretation. Because course sequencing varies significantly by school and track, it's worth confirming exactly which course your child is taking before choosing tutoring content.

Key topics covered

• Linear Equations & InequalitiesSolving and graphing across one and two variables.
• Systems of EquationsSolving by substitution, elimination and graphing.
• Exponents & PolynomialsRules of exponents; introduction to polynomial expressions.
• Quadratic EquationsFirst formal treatment, including factoring and the quadratic formula.
• FunctionsFormal function notation and interpretation.