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16. Write an equation of a parabola whose directrix is x = 7 and has a focus at (-3, –7). A. (y – 2)² = –12(x+7) B. (x + 7)² = -25(y – 2) C. (x – 2)² = -16(y +7) D. (y + 7)2 = -20(x – 2) %3D %3D %3D

16. Write an equation of a parabola whose directrix is x = 7 and has a focus at (-3, –7). A. (y – 2)² = –12(x+7) B. (x + 7)² = -25(y – 2) C. (x – 2)² = -16(y +7) D. (y + 7)2 = -20(x – 2) %3D %3D %3D

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Answer both 16 and 42, they are both subparts they are related.

16. Write an equation of a parabola whose directrix is x = 7 and has a foCUs at (-3, –7). A. (y – 2)² = –12(x+7) B. (x + 7)² = -25(y – 2) C. (x – 2)² = -16(y+ 7) D. (y + 7)² = -20(x – 2) %3D
Transcribed Image Text:16. Write an equation of a parabola whose directrix is x = 7 and has a foCUs at (-3, –7). A. (y – 2)² = –12(x+7) B. (x + 7)² = -25(y – 2) C. (x – 2)² = -16(y+ 7) D. (y + 7)² = -20(x – 2) %3D
42. A parabola has the origin for vertex and opens down. The rectangle bounded by the axis has area 904 sq. units. Find the equation of this parabola. latus rectum and the x 1 A. x² = -5v211y B. x? = -6v215y C. x² = -7/227y D. x² = -4v226y
Transcribed Image Text:42. A parabola has the origin for vertex and opens down. The rectangle bounded by the axis has area 904 sq. units. Find the equation of this parabola. latus rectum and the x 1 A. x² = -5v211y B. x? = -6v215y C. x² = -7/227y D. x² = -4v226y
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