Warm-up and HW Quiz

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SECTION 9.5 WARM-UP EXERCISES Evaluate the function for the given values of t. 1. y = 2t 2 + 1; t = 0, 1, 2, 3, and 4 2. y = 4 − 2t ; t = 0, 1, 2, 3, and 4 3. y = 2cost; t = 0, π 3 , 2π 3 , π Sketch a graph of the following functions for positive x-values. 4. y 2 + 2x − 4y = 0 5. (x − 1)2 + (y − 1) 2 = 4 DAILY HOMEWORK QUIZ Sketch the curve represented by the parametric equations (indicate the orientation of the curve). Then eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. 1. x = 3t − 2 2. x = 2t 3. x = e −t 4. x = 2 − cosθ y = 2t + 1 y = 1 1− t y = e 2t y = 1+ 2sinθ 88 Precalculus with Limits: A Graphing Approach 5e, Warm-Up Exercises and Daily Homework Quiz Transparencies Copyright © Houghton Mifflin Company. All rights reserved.
ANSWERS WU 1. 1, 3, 9, 19, 33 2. 4, 2, 0, 2, 4 3. 2, 1, –1, –2 4. 5. QUIZ 1. 2. y = 2x + 7 3 3. 4. y = 2 2 − x y = 1 (y − (x − 2) 2 1)2 + x 2 4 = 1 Precalculus with Limits: A Graphing Approach 5e, Warm-Up Exercises and Daily Homework Quiz Transparencies Copyright © Houghton Mifflin Company. All rights reserved. 89
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