Homework Section 3.1 MAT121 SECTION 3.1 HOMEWORK ANSWER KEY 10, 18, 26, 30, 35, 42 10. = β + + a. The parabola opens down. b. The vertex is β2, 4 . c. The x-intercepts are 0,0 and (β4, 0). β + 2 ! + 4 = 0 β + 2 ! = β4 + 2 ! = 4 + 2 = 4 = β2 Β± 2 = 0, β4 d. The y-intercept is (0,0). 0 = β 0 + 2 ! + 4 = 0 e. Sketch the graph. f. The axis of symmetry is = β2. g. The function has a maximum value of 4. h. Domain: (ββ, β) Range: (β β, 4] 18. = + + a. Vertex Form: + 4 ! β 9 (! + 8+ 16) + 7 β 16 b. The vertex is β4, β9 . c. The x-intercepts are β1,0 and (β7, 0). + 1 + 7 = 0 d. The y-intercept is (0,7). e. Sketch the graph. f. The axis of symmetry is = β4 g. The function has a minimum value of β9. h. Domain: (ββ, β) Range: [β9, β)
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HW Section 3.1 Answer Key Word - HW Section 3.1 Answer Key.docx Created Date 9/9/2017 5:10:52 PM ...
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