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 & Inequalities — Solving and graphing across one and two variables.
• Systems of Equations — Solving by substitution, elimination and graphing.
• Exponents & Polynomials — Rules of exponents; introduction to polynomial expressions.
• Quadratic Equations — First formal treatment, including factoring and the quadratic formula.
• Functions — Formal function notation and interpretation.