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VIRGINIA STANDARDS OF LEARNING Spring 2007 Released Test END OF COURSE ALGEBRA II Form M0117, CORE 1 Property of the Virginia Department of Education ©2007 by the Commonwealth of Virginia, Department of Education, P.O. Box 2120, Richmond, Virginia 23218-2120. All rights reserved. Except as permitted by law, this material may not be reproduced or used in any form or by any means, electronic or mechanical, including photocopying or recording, or by any information storage or retrieval system, without written permission from the copyright owner. Commonwealth of Virginia public school educators may reproduce any portion of these released tests for non-commercial educational purposes without requesting permission. All others should direct their written requests to the Virginia Department of Education, Division of Student Assessment and School Improvement, at the above address or by e-mail to [email protected]. ISD6736 Algebra II Formula Sheet Geometric Formulas b l h h h h b A= 1 2 b bh A = bh s l r A= 1 2 h h h p = 4s A = s2 1 3 w V = lwh S.A.= 2(lw + lh + wh) b1 s r V = 13 Bh S.A.= 12 lp + B b2 h(b1 + b2 ) w l B c a r b l c2 = a2 + b2 p = 2(l + w) A = lw Abbreviations Pi milligram gram kilogram milliliter liter kiloliter millimeter centimeter meter kilometer square centimeter cubic centimeter mg g kg mL L kL mm cm m km cm2 cm3 ounce pound quart gallon inch foot yard mile square inch square foot cubic inch cubic foot oz lb qt gal. in. ft yd mi. sq in. sq ft cu in. cu ft volume total surface area area of base V S.A. B year month hour minute second yr mon hr min sec 22 7 Quadratic Formula x= –b ± b2 – 4ac 2a Algebra II Directions Read and solve each question. Then mark the space on your answer document for the best answer. For this test you may assume that the value of the denominator of a rational expression is not zero. SAMPLE 6 (a + 2 ) a A B C D i a3 a +2 = 6 a2 6(a + 2) a 6a 2 6a 2 + 24a + 24 a4 5 1 Which is a simplified form of the following expression? 4 27 3 A B C D 2 4 19, 683 36 81 177,147 Which is a true statement? ( )( ) = ( x − y )( x − y ) = ( x + y )( x + y ) = ( x − y )( x − y ) F x2 −y2 = x +y x −y G x2 −y2 H x2 +y2 J x2 +y2 6 3 Which is equivalent to the following expression? 2 x −3 A − x x −3 ? 2−x 0 B C D 4 2x x −3 2−x x −3 2−x ( 2 x −3 ) If no denominator is equal to zero, which is a simplified form of the following expression? ⎛ 5x y ⎜ ⎜ x −y x −y ⎝ ( F G H J )( 5 xy (x + y ) 2 5 (x + y ) 2 5 ( x − y )( x + y ) 5 xy ( x − y )( x + y ) 7 ) ⎞⎛ ⎞ ⎟ ⎜ x −y ⎟ ⎟ ⎝ x +y ⎠ ⎠ 5 Which is equivalent to 2 27 + 3 75 − 18 ? 6 A 18 6 B 4 120 C 21 3 − 3 2 D 24 3 − 9 2 Which statement is a result of applying the transitive property of inequalities? Given: 2 x − 1 < 7x and 7x < x + 72 7 F 2 x − 1 < x + 72 G x + 72 < 7 x H x + 72 < 2 x − 1 J 7x < 2x − 1 Which is equivalent to the expression below? (1 + 3i)(3 + i) A B C D 3 − 10i 6 + 6i 6 + 10i 10i 8 8 What is the completely factored form of the following expression? 6 x 2 + 7x − 3 9 F (2x + 3)(3x − 1) G (2x − 3)(3x + 1) H (6x − 3)( x + 1) J (6x − 1)( x + 3) If x ≠ − 3, which is an equivalent form of the following expression? 6x + 7 ( 2 x +3 A B C D − ) 2 ( x + 3) 2 x +1 x +3 2x + 1 x +3 ( 2 2x + 3 2x + 5 ) x +3 9 10 Which is an equivalent form of the following? − 11 F − 8i G − 9i H i + 10 J − 1 −5 − 4 9 Which equation represents the statement below? “a is inversely proportional to b.” A a =k +b B a = kb C a= D a= b k k b 10 12 What type of function is ( ) ( f x = 3 x −2 F G H J 13 ) 2 + 1? Quadratic Linear Exponential Step Ohm’s Law relates to a simple electric circuit and states: The resistance is directly proportional to the voltage and inversely proportional to the current. One circuit has a resistance of 8 ohms when the voltage is 48 volts and the current is 6 amperes. What is the resistance of a second circuit that has a voltage of 128 volts and a current of 8 amperes? A B C D 120 ohms 64 ohms 28 ohms 16 ohms 11 14 Which graph best represents the following equation? y= − ( ) 2 x −3 − 1 y 5 4 3 2 F 1 -5 -4 -3 -2 -1 O 1 2 3 4 5 x 1 2 3 4 5 x 1 2 3 4 5 x 1 2 3 4 5 x -1 -2 -3 -4 -5 y 5 4 3 2 G 1 -5 -4 -3 -2 -1 O -1 -2 -3 -4 -5 y 5 4 3 2 H 1 -5 -4 -3 -2 -1 O -1 -2 -3 -4 -5 y 5 4 3 2 J 1 -5 -4 -3 -2 -1 O -1 -2 -3 -4 -5 12 15 ( ) If f x = x 3 + x 2 − 8, what is f A B C D 16 − − ( 8) ? − 568 456 456 568 The table below shows the value of a certain collectible baseball card over eight years. Year (x) 1 2 3 4 5 6 7 8 Value (y ) (in dollars) 3 5 9 18 29 43 51 69 Which exponential equation best represents the data? ( ) x F y = 2.18 6.1 G y = 14.8 9.58 H y = 0.53 1.01 J y = 2.25 1.59 ( ) ( ) x x ( ) x 13 17 What are the first three terms of the sequence defined by the following equation? ) ( an = 7 + n − 1 5 18 A 12, 17, 22 B 7, 2, C 7, 12, 17 D 7, 35, 175 − 3 This table of ordered pairs contains elements of a function of x. x y 0 11 1 6 2 3 3 2 4 3 Which equation could define the function? F y = − 5 x + 11 G y = − 2 x + 11 H y = x −3 +2 ( ) y = ( x − 2) + 7 2 2 J 14 19 Which appears to be the graph of a quadratic function? y 8 7 6 5 4 3 2 1 A – 2 –1 –O 1 – 2 1 2 3 4 5 6 7 8 x 2 4 6 8 10 12 14 16 x y 8 7 6 5 4 3 2 1 B – 4 –2 –O 1 – 2 y 25 20 15 10 C 5 – 25 –20 –15 –10 –5 O – 5 – 10 – 15 – 20 – 25 5 10 15 20 25 x 1 2 3 4 5 x y 16 14 12 10 8 6 4 2 D – 5 –4 –3 –2 –1 –O 2 – 4 15 20 Which lists four consecutive terms of a geometric sequence? F G H J 21 1, 4, 8, 16 6, 9, 12, 15 12, 48, 192, 768 7, 14, 42, 168 ( ) Which is a root of f x = 0 if ( ) ( )( ) f x = x +5 x −4 ? A B C D − − 5 4 0 5 ( ) g ( x ) = 3x f x = 2x − 1 22 ( ( )) is Given the functions defined above, the composite function g f x equal to — F 5x − 1 G 6x − 3 H 6x − 1 J 6x 2 − 3 16 23 y 10 5 x -15 -10 -5 5 10 15 20 25 -5 -10 -15 -20 Which equation best represents the line of best fit for the data in the scatterplot above? 24 A y = 4x − 1 B y = −x + 4 C y = − 9x + 3 D y =x Assuming the domain is the set of all real numbers, what is the range of the following function of x ? y = x2 +2 F G H J All All All All integers real numbers real numbers greater than or equal to 0 real numbers greater than or equal to 2 17 25 x 4 4.5 5 5.5 6 y 0.5 0.6 0.8 0.9 1.2 Which is most likely the equation of the line of best fit for the data given in the table? 26 A y = 0.34 x − 0.9 B y = 0.25 x − 0.7 C y = 0.45 x − 1 D y = 0.50 x − 0.6 Assuming k is a constant of variation, which equation represents a situation in which y varies jointly as a and b? F y = kab G y= ab H y= k J y= k ab ka b 18 27 Which shows the solution to the following inequality? x −3 > 2 A B C D 28 0 5 10 0 5 10 0 5 10 0 5 10 What is the solution set for the equation below? x −2 8 F {2, 8} G ⎧⎪ 10 ⎫⎪ ⎨ ⎬ ⎪⎩ 3 ⎪⎭ H J − x −2 x { 4} {6} 19 = − 1 4 29 What is the solution to the equation? x +4 x A x = −7 B x = −4 C x = −1 D x= = 14 5 20 3 7 30 What is the apparent solution set for the equation associated with the following graph? y 7 6 5 4 3 2 1 -2 -1 O -1 x 1 -2 F { 2, 2} G ⎧− ⎫ ⎪ 1 1⎪ ⎨ , ⎬ ⎪⎩ 2 2 ⎪⎭ H ⎧− ⎫ ⎪ 1⎪ ⎨ ⎬ ⎪⎩ 4 ⎪⎭ J − { 1, 1} − 21 2 31 What is the solution for the equation below? x −6 +5 = 8 32 A x =9 B x = 15 C x = 19 D x = 65 What is the solution set for the following equation? x 2 + 6x − 7 = 0 F G H J { 1, 7} { 2, 3} { 3, 2} { 7, 1} − − − − 22 33 What is the solution set for the following equation? 6 = x2 − x A ⎧⎪ 1 i 23 ⎫⎪ ⎨ ± ⎬ 2 ⎪⎭ ⎪⎩ 2 B ⎧⎪ − 1 i 23 ⎫⎪ ⎨ ± ⎬ 2 ⎪⎭ ⎪⎩ 2 { 2, 3} { 3, 2} − C − D 34 If − 6 x + 11 = 4 , then — F x= G x= H x= J x= − 5 2 − 7 6 − 5 2 7 6 − or x = 6 or x = 5 or x = 7 or x = 7 2 6 5 2 23 35 Which graph best represents the given inequality? y ≥ x +1 y 5 4 3 2 1 A – 5 –4 –3 –2 –1 –O 1 – 2 – 3 – 4 – 5 1 2 3 4 5 x 1 2 3 4 5 x 1 2 3 4 5 x 1 2 3 4 5 x y B 5 4 3 2 1 – 5 –4 –3 –2 –1 –O 1 – 2 – 3 – 4 – 5 y C 5 4 3 2 1 – 5 –4 –3 –2 –1 –O 1 – 2 – 3 – 4 – 5 y D 5 4 3 2 1 – 5 –4 –3 –2 –1 –O 1 – 2 – 3 – 4 – 5 24 36 Which graph best represents the following equation? y = 2x y 5 4 3 2 F 1 - 5 - 4 - 3 - 2 -1 O -1 1 2 3 4 5 x 1 2 3 4 5 x 1 2 3 4 5 x 1 2 3 4 5 x -2 -3 -4 -5 y 5 4 3 2 G 1 - 5 - 4 - 3 - 2 -1 O -1 -2 -3 -4 -5 y 5 4 3 2 H 1 - 5 - 4 - 3 - 2 -1 O -1 -2 -3 -4 -5 y 5 4 3 2 J 1 - 5 - 4 - 3 - 2 -1 O -1 -2 -3 -4 -5 25 37 y 9 8 7 6 5 4 3 2 1 -9 -8 -7 -6 -5 -4 -3 -2 -1 O 1 2 3 4 5 6 7 8 9 x -1 -2 -3 -4 -5 -6 -7 -8 -9 Which appears to be an x-intercept of the graph shown? A B C D − 4 0 1 2 26 38 Which graph most closely represents ( x +2 ) ( 2 + y +1 y 5 4 3 2 F 1 5 4 3 2 1O 1 1 2 3 4 5 x 2 3 4 5 y G 5 4 3 2 1 -5 -4 -3 -2 -1 O -1 -2 -3 -4 -5 1 2 3 4 5 x y 5 4 3 2 H 1 5 4 3 2 1O 1 1 2 3 4 5 x 2 3 4 5 y J 5 4 3 2 1 -5 -4 -3 -2 -1 O -1 -2 -3 -4 -5 1 2 3 4 5 x 27 ) 2 = 9? 39 y 7 6 5 4 3 2 1 – 7 – 6 – 5 – 4 – 3 – 2 – 1 O – 1 2 3 4 5 6 1 – 2 – 3 – 4 – 5 – 6 – 7 Which equation is best represented by the graph? ( ) 2 A y = x − 3 +1 B y= − C y= − D y= − ( x + 3) + 1 ( x − 3) − 1 ( x − 3) + 1 2 2 2 28 7 x 40 y 5 4 3 2 1 -5 -4 -3 -2 -1 O 1 2 3 4 5 x -1 -2 -3 -4 -5 Which is an apparent factor of the polynomial graphed above? F G H J 41 ( x − 1) ( x − 2) ( x − 2.5) ( x + 2) A polynomial function has zeros − 3 and 4. Which is one of the factors of the polynomial? A B C D ( x + 1) ( x − 3) ( x + 3) ( x + 4) 29 42 y 5 4 3 2 1 - 5 - 4 - 3 - 2 -1 O -1 1 2 3 4 5 x -2 -3 -4 -5 This is a portion of the graph of a conic section. Which equation most likely represents this graph? F y = 2x 2 G x = 2y 2 H y = 3x 2 J x = − 2y 2 30 ⎡ 4 5⎤ ⎡ x ⎤ ⎡20 ⎤ ⎢ ⎥⎢ ⎥ = ⎢ ⎥ ⎣ 9 10 ⎦ ⎣ y ⎦ ⎣30 ⎦ 43 Which system of linear equations is equivalent to the matrix equation above? 44 A ⎧ 4 x + 9y = 20 ⎨ ⎩5 x + 10y = 30 B ⎧ 4 x + 5y = 20 ⎨ ⎩ 9 x + 10y = 30 C ⎧ 4 x + 5 x = 20 ⎨ ⎩ 9y + 10y = 30 D ⎧ 4 x + 5y = 20 ⎨ ⎩5 x + 10y = 30 Which matrix is equivalent to ⎡1 1⎤ ⎡1⎤ ⎢ ⎥ ⎢ ⎥? 1 1 ⎣ ⎦ ⎣1⎦ F ⎡1⎤ ⎢ ⎥ ⎣1⎦ G ⎡1 ⎢ ⎣1 H ⎡2 ⎤ ⎢ ⎥ ⎣2 ⎦ J ⎡2 2 ⎤ ⎢ ⎥ ⎣2 2 ⎦ 1⎤ ⎥ 1⎦ 31 45 Charlie bought jeans, j, and T-shirts, t, at a clothing store. The receipt showed that a total of seven items was purchased and that the jeans were $28 each and the T-shirts were $12 each. If he spent a total of $116 before tax, which system of equations could be used to determine the number of jeans he purchased? A ⎧⎪7j + 12t = 28 ⎨ ⎩⎪ j + t = 116 B ⎧⎪28 j + 12t = 116 ⎨ ⎩⎪ j + t = 7 C ⎧⎪28 j + 12t = 7 ⎨ ⎩⎪ j + t = 116 D ⎧⎪12 j + 28t = 116 ⎨ ⎩⎪ j + t = 7 ⎧ − ⎪y ≥ x −6 ⎪ ⎪ y ≤ x +2 ⎨ ⎪ 11 ⎪ x −6 ⎪y ≥ 3 ⎩ 46 What are the corner points of the feasibility region for the given system of inequalities? ⎛ 1 −1 ⎞ 2, 4 , 0, 2 , ⎜ , ⎟ ⎝ 2 2⎠ 4, − 2 , 0, − 6 , 3, 5 ) ( ) F ( − G ( − H ( ⎛1 0, − 2 , 1, − 1 , ⎜ , ⎝2 J ( − − − ) ( ) ( ⎛3 2, − 4 , ⎜ , ⎝2 ) ) ( ) ) − − 1⎞ ⎟ 2⎠ 1⎞ ⎟ , 2, 0 2⎠ ( ) 32 47 y 5 4 3 2 1 - 5 - 4 - 3 - 2 -1 O -1 1 2 3 4 5 x -2 -3 -4 -5 Which system of inequalities is best represented by the graph above? A ⎧x ≥ 0 ⎪ ⎨y ≤ 3 ⎪y ≤ 4 − 2 x ⎩ B ⎧x ≥ 0 ⎪ ⎪y ≥ 0 ⎨ ⎪y ≤ 3 ⎪⎩y ≥ 4 − 2 x C ⎧x ≥ 0 ⎪ ⎨y ≥ 0 ⎪y ≤ 4 − 2 x ⎩ D ⎧x ≥ 0 ⎪ ⎪y ≥ 0 ⎨ ⎪y ≤ 3 ⎪⎩y ≤ 4 − 2 x 33 ⎧⎪y = x 2 + 6 x + 1 ⎨ ⎪⎩y = − 2 x − 14 48 What is the solution set for the given system of equations? F G H J 49 {( 3, 8),( 5, 4)} {( 7, 0),(0,1)} {( 5, 4),(0,1)} {( 3, 8)} − − − − − − − − − Which is the apparent solution set to the system of equations shown on the graph? y 13 12 11 10 9 8 7 6 5 4 3 2 1 -2 -1 O 1 2 -1 A B C D {(3, 9),( 1, 9)} {(0,3),(0,5)} {( 1, 9),(1,1)} {( 1, 9)} − − − 34 3 4 x ⎡ 5 10 ⎤ ⎡25 30 ⎤ Given: A = ⎢ ⎥ and B = ⎢ ⎥ ⎣25 30 ⎦ ⎣ 5 10 ⎦ 50 Which matrix is the product B × A ? F ⎡175 250 ⎤ ⎥ ⎢ ⎣775 1, 050 ⎦ G ⎡250 600 ⎤ ⎥ ⎢ ⎣ 425 1, 050 ⎦ H ⎡125 300 ⎤ ⎢ ⎥ ⎣125 300 ⎦ J ⎡875 1,150 ⎤ ⎥ ⎢ ⎣275 350 ⎦ 35 Answer Key-EOC041-M0117 Test Sequence Number Correct Answer 1 C 2 F 3 C 4 J 5 C 6 F 7 D 8 F 9 C 10 G 11 D 12 F 13 D 14 J 15 B 16 J 17 C 18 H 19 A 20 H 21 A 22 G 23 B 24 J 25 A 26 F 27 A 28 H 29 A 30 G 31 B 32 J 33 C 34 J 35 D 36 G 37 D 38 F 39 D 40 F 41 C 42 J 43 B 44 H 45 B 46 G 47 D 48 F 49 C 50 J Reporting Category 001 001 001 001 001 001 001 001 001 001 002 002 002 002 002 002 002 002 002 002 002 002 002 002 002 002 003 003 003 003 003 003 003 003 003 003 004 004 004 004 004 004 005 005 005 005 005 005 005 005 Reporting Category Description Expressions and Operations Expressions and Operations Expressions and Operations Expressions and Operations Expressions and Operations Expressions and Operations Expressions and Operations Expressions and Operations Expressions and Operations Expressions and Operations Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Relations and Functions Equations and Inequalities Equations and Inequalities Equations and Inequalities Equations and Inequalities Equations and Inequalities Equations and Inequalities Equations and Inequalities Equations and Inequalities Equations and Inequalities Equations and Inequalities Analytical Geometry Analytical Geometry Analytical Geometry Analytical Geometry Analytical Geometry Analytical Geometry Systems of Equations/Inequalities Systems of Equations/Inequalities Systems of Equations/Inequalities Systems of Equations/Inequalities Systems of Equations/Inequalities Systems of Equations/Inequalities Systems of Equations/Inequalities Systems of Equations/Inequalities Algebra II, Core 1 If you get this many items correct: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Then your converted scale score is: 000 163 200 222 238 252 262 272 281 288 295 302 308 314 320 326 331 336 341 346 351 355 360 365 369 374 378 383 388 392 397 402 407 412 417 423 428 434 440 446 453 460 468 477 487 498 511 528 550 587 600