SUMMATIVE TEST 3 IN MATH 9
QUARTER 1
I:
II:
Name:________________________________________________Grade/Section:_________________Score:_______________
Parent’s Signature:______________________________
I. Multiple Choice
Direction: Choose the letter of your correct answer and write your answer on the blank provided.
________1 It 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 <.
A. Linear Inequality B. Linear Equation
C. Quadratic Inequality
D. Quadratic Equation
________2 The quadratic inequality in the form ax2 + bx + c < 0, which should not be equal
to zero?
A. a
B. b
C. c
D. all of the above
________3. Which of the following symbols does NOT illustrates inequality?
A. >
B. =
C. ≥
D. <
________4. What is the form of a quadratic function in the variables x and y?
A. 𝑦 = 𝑚𝑥 + 𝑏
B. 𝑦 = 𝑎𝑥 + 𝑏𝑥 + 𝑐
C. 𝑦 = 𝑎𝑥2 + 𝑏𝑥 + 𝑐
D. 𝑦 = 𝑎𝑥3 + 𝑏
________5. What is the degree of a quadratic function?
A. 0
B. 1
C. 2
D. 3
________6. What is the graph of a quadratic function?
A. Circle
B. Line
C. Parabola
D. V-shape
2
________7 How do “x - 5x is greater than or equal to 6” write in mathematical sentence?
A. x2 − 5x > 6
B. x2 − 5x ≤ 6
C. x2 − 5x < 6
D. x2 − 5x ≥ 6
________8. Given the following expressions, which one is a quadratic inequality?
A. (x − 2)(x + 7) > 0 B. x + 8 ≥ 15
C. 2x2 − x + 1 ≤ 0
D. x2 + 8x + 12 = 0
________9. Which of the following is not a quadratic function?
A. 𝑓(𝑥)=𝑥(2𝑥−1)
B. 𝑓(𝑥)=12𝑥2
C. 𝑓(𝑥)=5𝑥2−𝑥+1
D. 𝑓(𝑥)=2𝑥2+1−2𝑥2
________10. What type of function is modelled by the following; throwing a ball, shooting a cannon, diving from a
platform and hitting a golf ball.?
A. Linear Function
B. Polynomial Function
C. Quadratic Function D. Rational Function
________11. The length of the garden is 5m longer than its width and the area is 36m2. How long is the garden?
A. 4m
B. 5m
C. 9m
D. 13m
________12. A garment store sells about 40 t-shirts per week at a price of ₱ 100 each. For each ₱10 decrease in
price, the sales lady found out that 5 more t-shirts per week were sold. What price produces the maximum
revenue?
A. ₱65
B. ₱80
C. ₱90
D. ₱100
________13. Which of the following table of values represents a quadratic function?
________14. Using the table of values, which graph represents the quadratic function?
________15 The length of a floor is 5 m more than its width. The area of the floor is greater than 50 m2. How would
you represent the length of the floor?
A. 𝑤+50
B. 𝑤−50
C. 𝑤−5
D. 𝑤+5
________16. Which of the following equations represents a quadratic function?
A. y = 7 + 2x2 B. 2 + 7 = x
C. y = 7x - 22
D. y = 2x – 7
________17. Which of the following coordinates of points belong to the solution set of the inequality 𝑦
<2𝑥2+5𝑥−1?
A. (-3,2)
B. (-2,9)
C. (1, 6)
D. (3,1)
________18 An object is fired straight up with a velocity of 64 ft./s. Its height h after t seconds is given by
ℎ(𝑡)=−16𝑡2+64𝑡. What function best describes the situation?
A. Linear Function
C. Rational Function
B. Polynomial Function
D. Quadratic Function
II. Problem Solving
For nos. 19 and 20(5pts each). Solve the following:
19. Find the solution set of y<x2-2x-8.
20. Illustrate/ Sketch the graph of the given table below:
Rubrics for scoring:
5Points- A correct answer and solution is shown with correct label or description
4 Points- A correct answer but with incomplete solution
3 Points- A correct solution is shown but incorrect answer.
2 Points- Partial answer for problem with multiple answers but would not lead to a correct solution.
1 Point- Incorrect solution and no work shown.