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GRADE 9 MATH · CHAPTER 1

Algebra & functions

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  1. Expressions & equations

    Multiply two monomials

    Multiply coefficients and use the product rule for exponents.

    Study lesson Practise

  2. Algebra

    Solve an inequality with a negative coefficient

    Solve a strict linear inequality by division by a negative coefficient.

    Study lesson Practise

  3. Expressions & equations

    Solve a linear system by elimination

    Eliminate one variable to solve two simultaneous linear equations.

    Study lesson Practise

  4. Algebra

    Evaluate a quadratic function

    Evaluate a squared-variable function at signed inputs.

    Study lesson Practise

  5. Algebra

    Solve a factored quadratic

    Use the zero-product property to find both roots.

    Study lesson Practise

  6. Functions

    Read a quadratic’s vertex form

    Find the vertex’s x-coordinate from a completed-square expression.

    Study lesson Practise

  7. Functions

    Continue a geometric sequence

    Recognize repeated multiplication and use a common ratio to extend a geometric sequence.

    Study lesson Practise

AN EXAMPLE FROM THIS CHAPTER

Simplify (2x2)(3x3).

Show answer & explanation

6x5

Multiply the coefficients: 2 × 3 = 6. Add exponents of x: 2+3 = 5. The product is 6x5.

Curriculum & source notes

These are original Little Play study books organized around U.S. school topics. The official curriculum references below guide topic scope and progression. Coverage is selected, not a complete curriculum or a verified match to every state standard. They are not copies of a publisher’s textbook. Check your school’s syllabus and book edition.

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