Regents High School Examination Mathematics Worksheet - University Of The State Of New York Page 7

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16 In the physics lab, Thelma determined the kinetic energy, KE, of an
computations.
object at various velocities, V, and found the linear correlation coefficient
between KE and V to be +0.8. Which graph shows this relationship?
KE
KE
1
1
V
V
1
( 1 )
( 3 )
KE
KE
1
V
V
1
1
( 2 )
( 4 )
17 Which equation has roots that are real, rational, and unequal?
2
=
2
+ + =
(1)
(3)
x
4 0
x
x
1 0
2
2
+
=
=
x
4
x
4 0
(2)
(4)
x
2 0
18 The expression cos (π – x) is equivalent to
(1) sin x
(3) cos x
(2) –sin x
(4) –cos x
[7]
[OVER]
Math. B – Jan. ’08

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