Grade 9 Mathematics Crossword Puzzle – Quarter 1

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Across
  1. 1. A type of equation in the form ax² + bx + c = 0, where a ≠ 0. It has a highest exponent of 2.
  2. 6. The value(s) of the variable that satisfy an equation or inequality.
  3. 7. The highest or lowest point on the graph of a parabola (its turning point).
  4. 8. The U-shaped graph of a quadratic function.
  5. 9. The set of all possible input (x) values for a function.
  6. 10. A relationship where one quantity changes in response to another (e.g., direct or inverse variation).
  7. 15. The bottom part of a fraction that shows how many parts the whole is divided into.
  8. 16. A method of solving quadratic equations by expressing them as a product of two binomials.
Down
  1. 2. An expression or number that can be written as a ratio of two integers (a fraction).
  2. 3. A mathematical statement that compares two values using symbols like >, <, ≥, or ≤.
  3. 4. A number that multiplies a variable (e.g., in 3x, the coefficient is 3).
  4. 5. Refers to the standard form of a quadratic equation: ax² + bx + c = 0.
  5. 11. A line that a graph approaches but never touches. Common in rational functions.
  6. 12. The part of the quadratic formula under the square root: b² - 4ac. It tells the nature of the roots.
  7. 13. Meaning / Definition
  8. 14. A method for solving proportions: multiplying across the equals sign diagonally (a/b = c/d → ad = bc).