Math Quiz for Grade 9 Questions

Easy 1. Which of the following is a quadratic equation?

• a. c = πd

• b. x² – 2x – 5 = 0

• c. (x + 3) + 8 = 0 

• d. x + y = 5

Easy 2. What is the standard form of quadratic equation 3x – 2x² = 7?

• a.3x – 2x² = 7 

• b.3x – 2x² -7 = 0 

• c. – 2x² + 3x – 7 = 0 

• d.3x – 7 = – 2x² 

Easy 3. What is the value of coefficient of a, b, and c in quadratic equation 3x – 2x² = 7?

• a. a = -2, b = 3, c = -7 

• b. a = 2, b = 3, c = 7  

• c. a = 3, b = -2, c = -7 

• d. a = -7, b = 3, c = -2

Easy 4. What is the best solution in finding the roots of x² – 144 = 0 ?

• a. Using Quadratic Formula

• b. Using Completing The Square  

• c. Using Factoring

• d. Using Extracting Square Root

• a.Linear Equation   

• b.Linear inequality

• c. Quadratic Equation      

• d.Quadratic Inequality

Easy 6. Give the value of coefficient a, b , and c in  x² + 8x = 9

• a. 1, -8, 9   

• b. 1, 8, -9 

• c. -1, 8, -9     

• d. -1, -8, -9

Easy 7. The formula of the _____ of a quadratic equation is b2 – 4ac.

• a. Determinant   

• b. Discriminant

• c. Quadratic Formula 

• d. Quadratic Equation

Easy 8. Direct variation is a type of variation which produces pair of numbers in which their _______ is a constant.

•          a. Product   

• b. proportion 

• c. sum 

• d. ratio

Easy 9. The formula of the sum of roots of a quadratic equation _______________

•          a. 𝒙_𝟏 + 𝒙_𝟐 = b/a 

• b. 𝒙_𝟏 + 𝒙_𝟐 =  (-b)/a 

• c. 𝒙_𝟏 + 𝒙_𝟐 = a/b 

• d. 𝒙_𝟏 + 𝒙_𝟐 = (-a)/b

Easy 10. The formula of the product of roots of a quadratic equation ____

•          a. 𝒙_𝟏 ● 𝒙_𝟐=  a/c  

• b. 𝒙_𝟏 ● 𝒙_𝟐=  c/a 

• c. 𝒙_𝟏 ● 𝒙_𝟐=  (-a)/c 

• d. 𝒙_𝟏 ● 𝒙_𝟐=  (-c)/a