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Key Quiz 5.5
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1
Which of the following are zero(s) of the quadratic relation shown
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  1. 3
  2. 4
  3. -6
A)I only
B)II only
C)II and III
D)I, II, and III
2
Find the zeros of y = 3(x - 4)(x + 2)
A)2 and 4
B)—2 and 4
C)—2 and —4
D)—2, 3, and 4
3
Find the zeros by factoring or graphing: y = 2(x +1)2 -3
A)—6 and 3
B)—3 and 6
C)3 and 6
D)—3 and —6
4
How many zeros does the relation y = 2(x + 1)2 - 3 have?
A)None
B)1
C)2
D)3
5
The height of a rocket can be modeled by the relation h = -4.9t2 + 102t + 1.2, where t is time in seconds since launching and h is altitude in metres. Approximately how long will the rocket stay in the air?
A)15 s
B)17 s
C)19 s
D)21 s





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