Grade 9 1st Summative Examination

It 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.

• Linear Equation

• Linear Inequality

• Quadratic Equation

• Quadratic Inequality

Tags

CCSS.8.EE.C.7B

Which of the following statement is true about quadratic function?

I. Defined by equation y = ax² + bx + c, where a, b, and c are real

numbers and a≠0.

II. The highest degree of the variable is 2.

III. The equal differences in x lead to equal first difference in y.

IV. The graph of the function is a smooth curve.

• I, II and III

• I, III and IV

• I, II, and IV

• II, III and IV

What is c in the quadratic equation 2x² + 8x + 10 = 0?

• 10

• 8x

• 2x²

• 2x

How many real roots does the quadratic equation 5x² - 3x + 2 = 0?

• 0

• 1

• 3

• 4

Tags

CCSS.HSA-REI.B.4B

Which of the following ordered pairs represents a quadratic function?

• {(-1,8),(0,2),(1,0),(2,2),(3,8)}

• {(0,0),(1,5),(2,10),(3,15),(4,20)}

• {(1,2),(2,3),(3,4),(4,5),(6,7)}

• {(-5,-6),(-3,-4),(2,4),(4,3),(8,7)}

Find the product of the roots of x (x + 4) = 0.

• -4

• 0

• 4

• 12

Tags

CCSS.HSA.APR.B.2

The equation can be solved using which method/s?

I. Extracting square root

II. Factoring

III. Completing the square

IV. Quadratic formula

• II only

• IV only

• II, III and IV

• I, II, III, IV

Tags

CCSS.HSA-REI.B.4B

Which of the following statements is true about rational algebraic

equations?

• There are rational algebraic equations that cannot be reduced into quadratic equations.

• All values obtained from solving a rational algebraic equations are solutions to the said equation.

• The equation is an example of a rational algebraic equation

  transformable to quadratic equations.

• All rational algebraic equations have exactly two real solutions.

Tags

CCSS.HSA.REI.A.2

Which of the following is a quadratic equation?

• 2x² + 6r – 1

• 8t – 8 = 10

• x² + 4x -6 = 0

• 5x² – 7x ≤ 2

In the quadratic equation 10m² - 4m = 8 , which is the quadratic term?

• m²

• 10m²

• -4m

• m