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

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10 A function, f, is defined by the set {(2,3), (4,7), (−1,5)}. If f is reflected
computations.
in the line y = x, which point will be in the reflection?
(1) (5,−1)
(3) (1,−5)
(2) (−5,1)
(4) (−1,5)
11 Which equation is represented by the accompanying graph?
y
1
x
π
π
π
π
2
–1
2
(1) y = cos x
(3) y = cos 2x
1
1
(2) y = cos x
(4) y =
cos x
2
2
12 Which expression is in simplest form?
2
x
x
4
(1)
(3)
+
x
2
2
x
+
2
x
9
9
6
x
(2)
(4)
x +
2
2
x
x
9
6
1
1
x
3
13 The expression
is equivalent to
3
1
x
1
(1)
(3) 3
3
− 1
(4) −3
(2)
3
[5]
[OVER]
Math. B – June ’07

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