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MATH 117 EXTRA PRACTICE
Graph the following parabola. Find the vertex , the axis of symmetry, the x intercepts, y intercept.
vertex______ axis_______, x intercepts________ y intercepts_______ 
34)  
36) Find the equation of a parabola with vertex at (2, 3) and
containing the point (3, 1) 
Solve .
37) A projectile is thrown upward so that its distance above the ground
after
t seconds is h = 12t^{2} + 336t. After how many seconds does it reach its maximum height? 

38) The length and width of a rectangle have a sum of 88. What
dimensions give the maximum area? 
Answer Key
Testname: PRACTICE EXAM 4 CHAPTER 11 F'07T
13) 0.333, 3
14) 13 cm
15) cm
16) Two rational solutions
17) Two imaginary solutions
18)
19) 5 and 7 or 5 and 7
20) 8m by 15 m
21) 8, 9
22) (6, 0), (0, 36)
23) No x intercepts , (0, 12)
24) 6, 10
25) 9
27) 15 hr; 30 hr
28) Bike: 12 mph; hike: 2 mph
29) Opens upward; V(1, 2) axis x = 1
30) Opens downward; V(9, 4), axis of symmetry x = 9
Axis of symmetry is x = 6.
34) Vertex (3, 1), axis x = 3, x int (4, )), (2, 0), y intercept (0, 8)
37) 14 sec
38) Length 44 and width 44
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