Quiz Game - Math 9 1st Quarter

1. 1. Which of the following is a polynomial equation of degree two that can be written in the form ax² + bx + c = 0, where a, b, and c are real numbers and a ≠ 0?

• Exponential Equation

• Linear Equation

• Polynomial Equation

• Quadratic Equation

1. 2. Given the quadratic equation x² + 9x = 12, what is the value of c?

• -12

• -9

• 9

• 12

1. 3. The value of the discriminant of a quadratic equation is perfect square. What is the nature of its roots?

• real numbers and equal

• rational numbers and not equal

• irrational numbers and not equal

• no real roots

1. 4. What is the value of the discriminant of a quadratic equation x² + x + 1 = 0?

• -4

• -3

• -2

• -1

1. 5. Which of the following is a polynomial of degree 2 that can be written in the form 𝑎𝑥² + 𝑏𝑥 + 𝑐 < 0 where 𝑎, 𝑏, and 𝑐 are real numbers and 𝑎 ≠ 0. Symbols >, ≤ and ≥ may also be used in place of <?

• Linear Inequality

• Quadratic Inequality

• Linear Equation

• Quadratic Equation

1. 6. Which of the following symbols does NOT illustrate inequality?

• >

• =

• 1. ≥

• <

1. 7. Given the following expressions, which one is NOT a quadratic inequality?

• (𝑥−2)(𝑥+7) > 0

• 2𝑥³ − 𝑥 + 1 ≤ 0

• 1. 𝑥² + 8 ≥ 15

• 𝑥² + 8𝑥 + 12 = 0

1. 8. Which of the following shows the logical procedure of solving inequality in one variable?

   I. Find the roots of the corresponding equation.

   II. Test a number from each interval against the inequality.

   III. Plot the points corresponding the roots on the number line

• I, II, III

• I, III, II

• 1. II, III, I

• III, II, I

1. 9. What must be added to x² – 4x + __ to make it a perfect square trinomial?

• 2

• 4

• 1. 8

• 16

1. 10. In solving 2x² = -3(x + 2) using quadratic formula, what is the first thing to consider?

• Identify the value of a, b and c.

• Rewrite the equation in general form.

• 1. Divide both sides by a common factor.

• Substitute the values of a, b, and c in the quadratic formula.