9th Grade

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The Algebra I workbook covers 9th grade math curriculum, building on concepts from the Frontier Series.

Students will practice solving equations and inequalities, working with linear equations, graphs, polynomials, rational expressions, radicals, quadratic functions, and more. Check out the detailed curriculum below!

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Curriculum

1. Foundations of Algebra

  • Review of Arithmetic and Pre-Algebra: Basic operations, fractions, decimals, integers, and order of operations.

  • Properties of Real Numbers: Identity, inverse, commutative, associative, and distributive properties.

2. Solving Equations and Inequalities

  • Linear Equations: Solving one-variable linear equations, including word problems.

  • Equations with Variables on Both Sides: Techniques for solving and applications.

  • Systems of Linear Equations: Solving by graphing, substitution, and elimination methods; applications in word problems.

  • Linear Inequalities: Solving and graphing one-variable inequalities; compound inequalities.

  • Systems of Linear Inequalities: Graphing and interpreting solutions.

3. Functions

  • Understanding Functions: Definitions, domain and range, evaluating functions.

  • Linear Functions: Graphing linear functions, slope-intercept and point-slope forms, modeling with linear functions.

  • Function Notation and Operations: Using function notation, adding, subtracting, and composing functions.

  • Inverse Functions: Understanding and finding inverse functions.

4. Linear Equations and Their Graphs

  • Slope and Rate of Change: Understanding and calculating slope, interpreting slope in real-world contexts.

  • Forms of Linear Equations: Standard form, converting between forms, graphing linear equations in different forms.

  • Graphing and Writing Linear Equations: Using intercepts, slope, and applications to write and graph equations.

5. Polynomials and Factoring

  • Polynomial Operations: Adding, subtracting, multiplying, and dividing polynomials (excluding division by a polynomial).

  • Special Products: Square of a binomial, difference of squares, sum and difference of cubes.

  • Factoring: Factoring by grouping, factoring trinomials, and special factoring techniques.

  • Solving Quadratic Equations by Factoring

6. Rational Expressions and Equations

  • Simplifying Rational Expressions: Finding excluded values, simplifying complex fractions.

  • Operations with Rational Expressions: Addition, subtraction, multiplication, and division.

  • Solving Rational Equations: Techniques and applications in word problems.

7. Radicals and Connections to Geometry

  • Simplifying Radical Expressions: Basic operations with square roots and higher-order roots.

  • Pythagorean Theorem and Distance Formula: Applications in solving problems involving right triangles and distance between two points in a coordinate plane.

  • Solving Quadratic Equations: Using square roots, completing the square, and the quadratic formula.

8. Quadratic Functions and Equations

  • Graphing Quadratic Functions: Understanding parabolas, vertex form, and transformations.

  • Solving Quadratic Equations by Completing the Square

  • The Quadratic Formula: Derivation and applications.

  • Applications of Quadratic Functions: Projectile motion and other real-world problems.

9. Data Analysis and Probability

  • Descriptive Statistics: Mean, median, mode, range, and standard deviation.

  • Interpreting Graphs and Tables: Reading and analyzing data from various sources.

  • Simple Probability: Basic probability concepts and counting principles.