Kristin+Test

||
 * || **Report:** || **Missed Questions**
 * **Program:** || **Algebra II**  ||
 * **Test:** || **TEST TEST TEST on QUADRATICS QUADRATICS QUADRATICS**  ||
 * **User:** || **Miles, Kristin**  ||
 * **Session Date:** || **03/31/11 - 9:09 AM CST**  ||
 * **% Correct:** || **(10/20) 50.0%**  ||
 * **Correct Questions:** || **10**  ||
 * **Missed Questions:** || **10**  ||   ||

||  ||   || In which direction must the graph of f(x) = x2 be shifted to produce the graph of g(x) = (x - 4)2? ||  ||
 * View Missed | View Correct | View All ||


 * ||  ||   || **A.** || up ||   ||
 * || Answered Incorrect: ||  ||   || **B.** || down ||   ||
 * || Correct Answer: ||  ||   || **C.** || right ||   ||
 * ||  ||   || **D.** || left ||   ||

|| || || A quadratic equation is written in 4 equivalent forms below. # y = (x + 1)2 - 25
 * 1) y = x2 + 2x - 24
 * 2) y = (x - 4)(x + 6)
 * 3) y = x(x - 4) + 6(x - 4)

Which of the forms shown above would be the most useful if attempting to find the y-intercept of the quadratic equation? || ||


 * ||  ||   || **A.** || III. ||   ||
 * || Answered Correct: ||  ||   || **B.** || II. ||   ||
 * ||  ||   || **C.** || I. ||   ||
 * ||  ||   || **D.** || IV. ||   ||

|| || || y = x2 - 4x + 4 Will the graph of the equation above intersect the x-axis in zero, one, or two points?

(//Use factoring to help you answer this question.//) || ||


 * ||  ||   || **A.** || zero ||   ||
 * ||  ||   || **B.** || There is not enough information. ||   ||
 * ||  ||   || **C.** || two ||   ||
 * || Answered Correct: ||  ||   || **D.** || one ||   ||

|| || || If the graph of the function y = x2 was to be reflected across the x-axis, what equation would correctly describe the new function? || ||


 * || Correct Answer: ||  ||   || **A.** || y = -x2 ||   ||
 * || Answered Incorrect: ||  ||   || **B.** || y = x-2 ||   ||
 * ||  ||   || **C.** || y = [[image:http://www85.studyisland.com/userfiles/sqrt.gif]]x ||   ||
 * ||  ||   || **D.** || y = x2 - 1 ||   ||

|| || || A quadratic equation is written in 4 equivalent forms below. # y = (x + 1)2 - 25
 * 1) y = x2 + 2x - 24
 * 2) y = (x - 4)(x + 6)
 * 3) y = x(x + 2) - 24

Which of the forms shown above would be the most useful if attempting to find the vertex of the quadratic equation? || ||


 * || Answered Incorrect: ||  ||   || **A.** || III. ||   ||
 * || Correct Answer: ||  ||   || **B.** || I. ||   ||
 * ||  ||   || **C.** || II. ||   ||
 * ||  ||   || **D.** || IV. ||   ||

|| || || || **x** || **y** || Which of the following equations matches the table shown above? || ||
 * -1 || -21 ||
 * 0 || -24 ||
 * 1 || -25 ||
 * 2 || -24 ||
 * 3 || -21 ||


 * ||  ||   || **A.** || //y// = -2//x// - 23 ||   ||
 * ||  ||   || **B.** || //y// = //x2 + 2//x //- 24// ||   ||
 * || Answered Correct: ||  ||   || **C.** || //y// = //x//2 - 2//x// - 24 ||   ||
 * ||  ||   || **D.** || //y// = //x//3 - 21 ||   ||

|| || || 2x2 - 1x = -2

Will the graph of the equation above intersect the x-axis in zero, one, or two points?

(//Use the quadratic formula to help you answer this question.//) || ||


 * ||  ||   || **A.** || two ||   ||
 * ||  ||   || **B.** || one ||   ||
 * || Answered Incorrect: ||  ||   || **C.** || There is not enough information. ||   ||
 * || Correct Answer: ||  ||   || **D.** || zero ||   ||

|| || || y = x2 - 16 Which of the following tables matches the equation shown above? || || **x** || **y** ||
 * -1 || -13 ||
 * 0 || -19 ||
 * 1 || -13 ||
 * 2 || -12 ||  ||   ||   || **x** || **y** ||
 * -1 || -15 ||
 * 0 || -16 ||
 * 1 || -15 ||
 * 2 || -12 ||  ||   ||   || **x** || **y** ||
 * -1 || -15 ||
 * 0 || -16 ||
 * 1 || -15 ||
 * 2 || 20 ||  ||   ||   || **x** || **y** ||
 * -1 || -12 ||
 * 0 || -16 ||
 * 1 || -12 ||
 * 2 || -12 ||  ||
 * **W** ||  || **X** ||   || **Y** ||   || **Z** ||   ||   ||


 * ||  ||   || **A.** || W ||   ||
 * || Answered Correct: ||  ||   || **B.** || X ||   ||
 * ||  ||   || **C.** || Z ||   ||
 * ||  ||   || **D.** || Y ||   ||

|| || || Clay built a dog pen based on the diagram below. The diagram is not drawn to scale.


 * || A = 60 m2 ||  || //x// - 2 ||
 * //x// + 5 ||  ||

What are the dimensions of the dog pen? || ||


 * ||  ||   || **A.** || 5 m by 2 m ||   ||
 * ||  ||   || **B.** || 30 m by 2 m ||   ||
 * ||  ||   || **C.** || 7 m by 10 m ||   ||
 * || Answered Correct: ||  ||   || **D.** || 12 m by 5 m ||   ||

|| || || Find the vertex of the parabola and indicate if it is a minimum or maximum for the function f(x) = -4(x - 3)2 + 7


 * || Answered Incorrect: ||  ||   || **A.** || vertex at (3, 7) is a minimum ||   ||
 * ||  ||   || **B.** || vertex at (-3, -7) is a maximum ||   ||
 * ||  ||   || **C.** || vertex at (-3, -7) is a minimum ||   ||
 * || Correct Answer: ||  ||   || **D.** || vertex at (3, 7) is a maximum ||   ||

|| || || 12x + 4 = -4x2 Will the graph of the equation above intersect the x-axis in zero, one, or two points?

(//Use the quadratic formula to help you answer this question.//) || ||


 * ||  ||   || **A.** || zero ||   ||
 * || Correct Answer: ||  ||   || **B.** || two ||   ||
 * ||  ||   || **C.** || one ||   ||
 * || Answered Incorrect: ||  ||   || **D.** || There is not enough information. ||   ||

|| || || Find the vertex of the parabola and indicate if it is a minimum or maximum for the function f(x) = -4(x - 3)2 - 7


 * ||  ||   || **A.** || vertex at (3, -7) is a minimum ||   ||
 * ||  ||   || **B.** || vertex at (-3, 7) is a maximum ||   ||
 * || Answered Correct: ||  ||   || **C.** || vertex at (3, -7) is a maximum ||   ||
 * ||  ||   || **D.** || vertex at (-3, 7) is a minimum ||   ||

|| || || What is the equation for the axis of symmetry of the quadratic function //f(x)// = 3//x//2 + 12//x// - 12? || ||


 * || Answered Incorrect: ||  ||   || **A.** || //x// = 2 ||   ||
 * || Correct Answer: ||  ||   || **B.** || //x// = -2 ||   ||
 * ||  ||   || **C.** || //x// = -4 ||   ||
 * ||  ||   || **D.** || //x// = 3 ||   ||

|| || || A quadratic equation is written in 4 equivalent forms below. # y = (x + 1)2 - 25
 * 1) y = x2 + 2x - 24
 * 2) y = (x - 4)(x + 6)
 * 3) y = x(x + 2) - 24

Which of the forms shown above would be the most useful if attempting to find the x-intercepts of the quadratic equation? || ||


 * || Correct Answer: ||  ||   || **A.** || III. ||   ||
 * ||  ||   || **B.** || I. ||   ||
 * || Answered Incorrect: ||  ||   || **C.** || IV. ||   ||
 * ||  ||   || **D.** || II. ||   ||

|| || || y = x2 + 7x + 10 What are the x-intercepts of the graph of the equation above? || ||


 * || Answered Correct: ||  ||   || **A.** || (-2, 0) and (-5, 0) ||   ||
 * ||  ||   || **B.** || (2, 0) and (-5, 0) ||   ||
 * ||  ||   || **C.** || (-2, 0) and (5, 0) ||   ||
 * ||  ||   || **D.** || (-1, 0) and (-7, 0) ||   ||

|| || || y = -3x2 + 8x + 15 Will the parabola of this equation open upward or downward? || ||


 * || Answered Correct: ||  ||   || **A.** || downward ||   ||
 * ||  ||   || **B.** || upward ||   ||
 * ||  ||   || **C.** || There is not enough information. ||   ||

|| || || Which of the following equations fits this graph? || ||


 * ||  ||   || **A.** || y = -2x2 + x + 1 ||   ||
 * ||  ||   || **B.** || y = 2x2 + 4x + 1 ||   ||
 * || Answered Correct: ||  ||   || **C.** || y = -2x2 + 4x + 1 ||   ||
 * ||  ||   || **D.** || y = 2x2 + 2x - 1 ||   ||

|| || || Vincente put his money into a mutual fund, where the amount of money he earned or lost can be found using the equation below, where //M// is the money Vincente earned or lost and //x// is time in years. //M// = //x//2 - 5//x// - 214 If Vincente lost $200, how long did he have his money in the mutual fund? || ||


 * ||  ||   || **A.** || 6 years ||   ||
 * || Correct Answer: ||  ||   || **B.** || 7 years ||   ||
 * || Answered Incorrect: ||  ||   || **C.** || 8 years ||   ||
 * ||  ||   || **D.** || 2 years ||   ||

|| || || The curve given by the equation //y// = 2//x//2 - 1 is graphed above. How will the graph of the equation be affected if the equation is changed to //y// = 2//x//2 + 2? || ||


 * || Answered Correct: ||  ||   || **A.** || The graph will be shifted up. ||   ||
 * ||  ||   || **B.** || The graph will be shifted down. ||   ||
 * ||  ||   || **C.** || The graph will be the same. ||   ||
 * ||  ||   || **D.** || The graph will be wider. ||   ||

|| || || In which direction must the graph of f(x) = x2 be shifted to produce the graph of g(x) = x2 - 4? || ||


 * ||  ||   || **A.** || left ||   ||
 * || Correct Answer: ||  ||   || **B.** || down ||   ||
 * ||  ||   || **C.** || up ||   ||
 * || Answered Incorrect: ||  ||   || **D.** || right ||   ||