Here is a 5-question English-language test (Grade 9) on the topic of quadratic polynomials. All questions are multiple choice. Answers are provided at the end.
Subject: English (English Language) Grade: 9 Topic: Quadratic Polynomial Question Type: Multiple Choice Number of Questions: 5 Instructions: Choose the best answer (A, B, C, or D). Answers are at the end.
Which of the following expressions is a quadratic polynomial in one variable? A) 3x + 2 B) x^2 + 5x − 7 C) sqrt(x) D) x^3 − x
What is the discriminant of the quadratic equation 2x^2 − 3x + 1 = 0? A) −1 B) 0 C) 1 D) 4
The axis of symmetry of the graph y = −4x^2 + 12x − 5 is x = ? A) 0 B) 3/2 C) −3/2 D) 6
Factorize the quadratic expression x^2 − 5x + 6. A) (x − 1)(x − 6) B) (x − 2)(x − 3) C) (x − 3)(x − 3) D) (x + 2)(x − 3)
If f(x) = 2x^2 − 8x + 3, what is the y-coordinate of the vertex? A) −5 B) 5 C) −8 D) 3
Answer key:
- B
- C
- B
- B
- A