Mathematics B Regents High School Examination - The University Of The State Of New York, 2007 Page 5

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12 Data collected during an experiment are shown in the accompanying
computations.
graph.
y
100
75
50
25
x
0
1 2 3 4 5 6 7 8 9 10
pH
What is the range of this set of data?
(1) 2.5 ≤ y ≤ 9.5
(3) 0 ≤ y ≤ 100
(2) 2.5 ≤ x ≤ 9.5
(4) 1 ≤ x ≤ 10
13 Which is a true statement about the graph of the equation
2
y = x
– 7x – 60?
(1) It is tangent to the x-axis.
(2) It does not intersect the x-axis.
(3) It intersects the x-axis in two distinct points that have irrational
coordinates.
(4) It intersects the x-axis in two distinct points that have rational
coordinates.
14 Which quadratic equation has the roots 3 + i and 3 − i?
+ 6x − 10 = 0
− 6x + 10 = 0
2
2
(1) x
(3) x
+ 6x + 8 = 0
− 6x − 8 = 0
2
2
(2) x
(4) x
[5]
[OVER]
Math. B – Jan. ’07

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