Solutions to Try Its
1. The path passes through the origin and has vertex at , so . To make the shot, would need to be about 4 but ; he doesn’t make it.
2. in general form; in standard form
3. The domain is all real numbers. The range is , or .
4. y-intercept at (0, 13), No x-intercepts
5. a. 3 seconds b. 256 feet c. 7 seconds
Solutions to Odd-Numbered Exercises
1. When written in that form, the vertex can be easily identified.
3. If then the function becomes a linear function.
5. If possible, we can use factoring. Otherwise, we can use the quadratic formula.
7. , Vertex
9. , Vertex
11. , Vertex
13. , Vertex
15. Minimum is and occurs at . Axis of symmetry is .
17. Minimum is and occurs at . Axis of symmetry is .
19. Minimum is and occurs at –3. Axis of symmetry is .
21. Domain is . Range is .
23. Domain is . Range is .
25. Domain is . Range is .
27.
29.
31.
33.
35.
37.
39.
41.
43.
45.
47.
49.
51.
53. Vertex , Axis of symmetry is . Intercepts are .
55. Vertex , Axis of symmetry is .
57. Vertex , Axis of symmetry is . Intercepts are .
59.
61.
63.
65.
67.
69.
71. The graph is shifted up or down (a vertical shift).
73. 50 feet
75. Domain is . Range is .
77. Domain is Range is .
79.
81.
83.
85. 50 feet by 50 feet. Maximize .
87. 125 feet by 62.5 feet. Maximize .
89. 6 and –6; product is –36; maximize .
91. 2909.56 meters
93. $10.70
Candela Citations
- Precalculus. Authored by: Jay Abramson, et al.. Provided by: OpenStax. Located at: http://cnx.org/contents/fd53eae1-fa23-47c7-bb1b-972349835c3c@5.175. License: CC BY: Attribution. License Terms: Download For Free at : http://cnx.org/contents/fd53eae1-fa23-47c7-bb1b-972349835c3c@5.175.