# ExamView - Quadratics Unit Test Review

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Name: Class: Date:ID: AQuadratics Unit Test ReviewMultiple ChoiceIdentify the choice that best completes the statement or answers the question.1. Identify the vertex of the graph. Tell whether it is a minimum or maximum.a.b.(0, –1); minimum(–1, 0); maximumc.d.(0, –1); maximum(–1, 0); minimum2. Which of the quadratic functions has the narrowest graph?1a. y x 2b. y x 2c. y 4x 243. Which of the quadratic functions has the widest graph?1b. y 4x 2c. y 0.3x 2a. y x 23y d.4y x254. If m n , then the graph of y mx 2 is narrower than y nx 2 .a. alwaysb. sometimesc. never5. A parabola has an axis of symmetry.a. alwaysb. sometimesc.11 2x9d.never

Name:ID: A6. Solve x 2 2 6 by graphing the related function.c.a.There are two solutions: 2 and –2.b.There are two solutions: 2 and –2.d.There are no real number solutions.There are two solutions: 8 .7. The quadratic equation x 2 a 0, where a 0, has at least one real number solution.a. alwaysb. sometimesc. neverSolve the equation using square roots.8. x 2 20 4a.24b. –4c.d.2 24no real number solutions

Name:ID: A9. Find the value of x. If necessary, round to the nearest tenth.a.7.3 in.b.10.3 in.c.12.4 in.d.14.6 in.c.d.z –3 or z 9z –3 or z –9c. 3,58d.3 5 ,4 2c.59 , 27d.5 9 ,3 2Solve the equation by factoring.10. z 2 6z 27 0a. z 3 or z 9b. z 3 or z –911. 15 8x 2 14x3a. 5,8b.2 4 ,5 312. 6x 2 17x 13 20x 2 325 95 9a.,b. ,3 22 713. The expression ax 2 bx 0 has the solution x 0.a. alwaysb. sometimesc.never14. Find the value of n such that x 2 19x n is a perfect square trinomial.36119a. b.c. 361d.423612Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.15. 2a 2 46a 252 0a. 18, 28b.–9, –14c.39, 14d.–18, 28

Name:ID: A16. A rocket is launched from atop a 101-foot cliff with an initial velocity of 116 ft/s.a. Substitute the values into the vertical motion formula h 16t 2 vt c . Let h 0.b. Use the quadratic formula find out how long the rocket will take to hit the ground after it is launched.Round to the nearest tenth of a second.c. 0 16t 2 116t 101; 0.8 sa. 0 16t 2 101t 116; 0.8 sb. 0 16t 2 116t 101; 8 sd. 0 16t 2 101t 116; 8 sUse any method to solve the equation. If necessary, round to the nearest hundredth.17. 7x 2 16x 28 0a. 3.45, –1.16b.–3.45, 1.16c.2.3, –2.3d.6.89, –2.3218. 7x 2 16x 8a. 0.42, –2.71b.2.71, –0.42c.35.43, –33.14d.5.42, –2.95b 2 4ac 3c.b 2 4ac 0c.219. For which discriminant is the graph possible?a.b 2 4ac 4b.Find the number of real number solutions for the equation.20. x 2 0x 1 0a. 0b.14

Name:ID: A21. Graph the set of points. Which model is most appropriate for the set?(–6, –1), (–3, 2), (–1, 4), (2, 7)c.a.linearexponentiald.b.quadraticlinear5

Name:ID: A22. Graph the set of points. Which model is most appropriate for the set?(–2, 10), (–1,1), (1, 1), (2, 10)c.a.quadraticlineard.b.quadraticexponential23. The table shows the estimated number of deer living in a forest over a five-year period. Are the data bestrepresented by a linear, exponential, or quadratic model? Write an equation to model the ential; y 91 0.77 xc.quadratic; y 0.77x 2 91b.linear; y 0.77x 91d.quadratic; y 91x 2 0.776

Name:ID: A24. In an exponential model, the y values decrease as the x values increase.a. alwaysb. sometimesc. never25. The equation x 2 n 0 has at least one real number solution when n 0.a. alwaysb. sometimesc. never7

Quadratics Unit Test Review Multiple Choice Identify the choice that best completes the statement or answers the question. _ 1. Identify the vertex of the graph. Tell whether it is a minimum or maximum. a. (0, –1); minimum c. (0, –1); maximum b. (–1, 0); maximum d. (–1, 0); minimum _ 2. Which of the quadratic functions has the .

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