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Math 110 Test 1
The graph of y = f (x) is given below.
Choose the graph for each of the following functions.
For problems 9  12 choose the equation that yields the given graph.
Answer the following questions for the quadratic function
f (x) = 2x^{2} + 8x + 5 whose
graph is a parabola
13. The graph of the function opens:
A. Up
B. Down
14. What is the vertex of the parabola ?
A. (2,19)
B. (2,5)
C. (2,13)
D. (0,5)
15. What is the equation of the axis of symmetry for the
function?
A. x = 2
B. x = 2
C. x = 4
D. x = 4
16. What is y intercept of the function ?
A. 2
B. 8
C. 5
D. 2
17. How many x intercepts does the function have?
A. None
B. 1
C. 2
D. 3
18. What is the domain of the function?
A. {x  x ≥2}
B. {x  x ≤ 2}
C. All positive numbers
D. All real numbers
19. What is the range of the function?
A. {y  y ≥ 19}
B. {y  y ≤ 5}
C. {y  y ≤13}
D. {y  y ≤ 8}
20. What is the largest interval on which the function is
increasing?
A. (∞,2)
B. (2,∞)
C. (∞,2)
D. (2,∞)
Answers:
1. D
2. G
3. B
4. E
5. H
6. C
7. F
8. A
9. D
10. A
11. D
12. E
13. B
14. C
15. A
16. C
17. C
18. D
19. C
20. C
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