The Lord’s Wisdom Academy of Caloocan,Inc. 1162 Santolan St. Corner Guyabano St. Area D.,Brgy. 178 Camarin, Caloocan City JUNIOR HIGHSCHOOL DEPARTMENT Math 9 Quiz No. 2 (2nd Quarter) Name: ______________________________ Grade/Section: Score: ________ Teacher: _________________Date: __________________Parent’s Signature_______ I. Fill in the blanks. 1. In variation, the constant ratio denoted by the variable k is called ___________ of variation. 2. The graph of direct linear variation is _______ line. 3. In v = kd, v varies __________ as d. 4. The variation equation of V varies directly as the squared of w is ________. 5. The constant variation of y varies inversely as x when y= 7 and x= 3 is ________. II. Choose the best correct answer. 1. What is the variation equation of p varies jointly as q and r? A. P = qr C. q = Pkr B. P = kqr D. qr = P 2. Which of the following is the inverse variation? A. V = ka/c C. V = c/a B. V = kbc D. V = cb 3. What is y when x is 72 if y varies directly as x and y = 24 when x = 6? A. 16 B. 17 C. 18 D. 19 2 4. Which is the value of k in the variation y = kx when y = 25 and x = 5? A. 0 B. 1 C. 2 D. 3 5. What is the graph of direct square variation? A. Straingt C. Parabola B. V-shape D. Circle III. Apply the laws of exponents and simplify the answer. 1. (2)3(4)2 =_________ 5. ((2)3(4)2)2 =_________ 9. (a2b3c4)5 =_________ 2. (32)2 =_________ 6. (x4)(y7) =_________ 10. (a2b3c4)5(abc) =_________ 3. (42)3(4) =_________ 7. (x5)2 =_________ 4. 25/23 =_________ 8. x5/y2 =_________ lV. Write without zero or negative exponents. Simplify the results. 1. 10(5) = _________ 3. (3xy)0 = _________ 5. b2(b-2)0 = _________ 2. x0(x0)2 = _________ 4. 5-2 = _________