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Republic of the Philippines Department of Education Region V- Bicol DIVISION OF CAMARINES NORTE CAMARINES NORTE NATIONAL HIGH SCHOOL Daet 2ND QUARTER MATHEMATICS 9 NAME: ________________________________________________________________________ GRADE & SECTION: __________________________________SCORE: ___________________ WEEK 1 Parallel Assessment M9AL-IIa-1: illustrates situations that involve the following variations: (a) direct; (b) inverse; (c) joint; (d) combined. M9AL-IIa-b-1: translates into variation statement a relationship between two quantities given by: (a) a table of values; (b) a mathematical equation; (c) a graph, and vice versa. M9AL-IIb-c-1: solves problems involving variation. MULTIPLE CHOICE. Choose the letter of the correct answer. Write your answer on the space provided. _______1. Which of the following verbal phrases is used to illustrate direct variation? A. is proportional to C. varies jointly as B. is inversely proportional to D. varies directly and inversely as _______2. The cost c varies directly as the number n of pencils is written as k A. c=kn C. n= c k B. k =cn D. c= n _______3. What happens to T when h is doubled in the equation T =4 h ? A. T is halved C. T is doubled B. T is tripled D. T becomes zero _______4. Which of the following table of values describes direct variation? A. x 2 3 4 5 C. x 1 2 3 4 y 1 2 3 4 y 1 2 3 4 0 0 0 0 B. . x 6 81 1 D. x 2 4 6 8 0 2 y 3 1 1 9 y 7 9 1 1 6 8 2 1 3 _______5. The graph of a direct variation is a _______________. A. a curve C. a hyperbola B. a line D. a parabola _______6. If y varies directly as x and y=12 when x =4 , find y when x =12. A. 3 C. 36 B. 4 D. 48 _______7. If y varies directly as x , and y=−18 when x =9, find y when x =7. A. −12 C. −14 B. −13 D. −15 _______8. Mackee’s income varies directly as the number of days she works. If she earns Php 8,000.00 in 20 days, how much will she earn if she worked 3 times as long? A. Php 26,000 C. Php 20,000 B. Php 24,000 D. Php 16,000