Grade 9 Quiz Bee Practice

Which of the following statements is true?

• The zero of f(x)=(x-3)² is 3.

• The x-intercept of the graph of f(x)=(x-3)² is -3.

• The root of (x-3)² = 0 is -3.

• The vertex of the parabola f(x)=(x-2)² is 3.

Describe the graph of g(x)= -2x² + 3x - 1.

• opens to the right

• opens to the left

• opens upward

• opens downward

What is the vertex of the parabola, y = x² - 3.

• (3, 0)

• (0, 3)

• (-3, 0)

• (0, -3)

What is the product of the roots of x² - 8?

• -8

• -2

• -4

• 0

What are the zeroes of f(x) = x² - 2x - 15?

• 5 and 3

• -5 and 3

• 5 and -3

• -5 and -3

Find the value of the discriminant of 3x² + 4x = -5.

• 22

• 44

• -44

• -22

What is the range of y = -2 (x - 2)² + 5?

• {y/ y ≥ 5}

• {y/ y ≤ 5}

• {y/ y > 5}

• {y/ y < 5}

Which among the following has a maximum value?

• y = x² + 2x + 1

• y = (3x + 1)(2x - 1)

• y = 3x (1 - x)

• y = 3 (x - 1)² - 2

The roots of the equation are 3 and -3. What is the equation?

• x² + 9 = 0

• x² - 3 = 0

• x² - 9 = 0

• x + 3 = 0

The sum of two numbers is 22, and their product is 120. What are the numbers?

• 11 and 11

• 22, 1

• 10, 12

• 14, 8