0005_hsm11a1_te_10tr.indd

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Lessons 9-5 through 9-8Chapter 9 Quiz 2

Form GDo You Know HOW?Solve each equation by completing the square. If necessary, round to the nearest hundredth.1. r2 + 6r = 162. m2 12m + 1 = 0Solve each equation using the quadratic formula. If necessary, round answers to the nearest hundredth.3. x2 4x 7 = 04. 2x2 5x 12 = 0Solve each equation using any method. Explain why you chose the method you used. If necessary, round to the nearest hundredth.5. x2 + 6x + 5 = 06. 3x2 12x = 17. f2 + 12f = 0Find the number of real-number solutions of each equation.8. 5x2 4x + 6 = 09. 3a2 4a 5 = 010. Which kind of function best models the data in the table? Write an equation to model the data.11. What are the solutions of the system?y = x2 x + 2

y = x + 5Do You UNDERSTAND?12. Vocabulary Explain why the quantity b2 4ac is called the discriminant.Prentice Hall Algebra 1 Teaching ResourcesCopyright by Pearson Education, Inc., or its affiliates. All Rights Reserved.82