PARALLEL-QUESTIONS-FOR-SECOND-GRADING-TEST.pptx

Assessment for Grade 9 Students

1. PARALLEL QUESTIONS FOR SECOND GRADING TEST VARIATIONS AND RADICALS

2. 1. If two quantities are related in such a way that increase in 1 quantity causes increase in other quantity, then this variation is said to be DIRECT INVERSE JOINT COMBINED

3. 2. If two quantities are related in such a way that when 1 quantity increases, the other quantity decreases, then this variation is said to be DIRECT INVERSE JOINT COMBINED

4. 3. The cost c varies directly as the number n of pencils is written as c = kn k = cn n = k/c c = k/n

5. 4. The speed r of a moving object is inversely proportional to the time t travelled is written as r = kt r = k/t t = kr r/k = t

6. 5. Which is an example of a direct variation? xy = 10 y = 2/x y = 5x 2/y = x

7. 6. A car travels a distance of d km in t hours. The formula that relates d to t is d = kt. What kind of variation is it? Direct Inverse Joint Combined

8. 7. If y varies inversely as x and y = 1/3 when x = 8, find y when x = - 4. - 2/3 2/3 - 32/3 32/3

9. 8. If y varies directly as x and y = 32 when x = 4. Find the constant of the variation. 8 36 28 128

10. 9. If 14 kg of almond nuts cost Php 441, what is the cost of 22 kg of almond nuts? Php 627 Php 649 Php 671 Php 693

11. 10. What happens to T when h is doubled in the equation T = 4h? T is halved T is tripled T is doubled T becomes zero

12. 11. Which of the following describes an inverse variation? A. C. B. D.

13. 12. If y varies directly as x and y = 12 when x = 4, find y when x = 12. 3 4 36 48

14. 13. If w varies directly as the square of x and inversely as p and q. If w = 12 when x = 4, p = 2 and q = 20, find w when x = 3, p = 8 and q = 5. 10 9 27/4 5

15. 14. If 36 men can do a piece of work in 25 days, in how many days will 15 men do it? 50 56 60 72

16. 15. What mathematical statement describes the graph on the right lw = 36 l/w = 36 l/36 = w w/36 = l

17. 16. 120 men had provisions for 200 days. After 5 days, 30 men died due to an epidemic. The remaining food will last for 146 ¼ days 150 days 225 ½ days 260 days

18. 17. Mackee’s income varies directly as the number of days that she works. If she earns Php 8,000 in 20 days, how much will she earn if she worked 3 times as long? Php 26,000 Php 24,000 Php 20,000 Php 16,000

19. 18. If (x – 4) varies inversely as (y + 3) and x = 8 when y = 2, find x when y = - 1. 20 18 16 14

20. 19. If h varies jointly as j2 and I and inversely as g, and h = 50 when j = 2, i = 5 and g = ½, find h when j = 4, i = 10 and g = ¼. 25 100 800 805

21. 20. The amount of gasoline used by a car varies jointly as the distance travelled and the square root of the speed. Suppose a car used 25 liters on a 100 km trip at 100 kph, about how many liters will it use on a 1000-km trip at 64 kph? 100 L 200 L 300 L 400 L

22. 21. Simplify   24 4 6 12  

23. 22. Rationalize the denominator    

24. 23. Which of the following is true? C. D.  

25. 24. What is the simplified form of ?   3 ¾ 16 3/16

26. 25. If a and b are real numbers and m and n are positive numbers, then is    

27. 26. If a and b are real numbers and m and n are positive numbers, then is    

28. 27. Write the expression in exponential form.   A. C. B. D.  

29. 28. Rewrite in radical form.   A. C. B. D.  

30. 29. Subtract .   A. C. B. D.  

31. 30. Evaluate -3 .   A. C. B. D.  

32. 31. Multiply. Write the product in simplest form.   A. C. B. D.  

33. 32. Solve the equation:   A. C. B. D.  

34. 33. Select the equation that is true. A. C. B. D.  

35. 34. Simplify the expression completely:   A. C. B. D.  

36. 35. Evaluate the expression without using the calculator.   A. C. B. D.  

37. 36. Between what two consecutive whole numbers does lie?   A. C. B. D.  

38. 37. The area of square garden is 173 square feet. Estimate the sidelength of the garden. A. C. B. D.  

39. 38. The area of square garden is 85 square feet. Estimate the side length of the garden. A. C. B. D.  

40. 39. A square stepping stone in Atlanta’s Centennial Olympic Park measure feet on a side. Which of the following is TRUE of the area of the square stone?   A. The area is a perfect square. B. The area is a rational number. C. The area is an irrational number. D. The area cannot be determined.

41. 40. Find the length of an edge of the given cube A. meters B. meters C. meters D. meters