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Math 12 Pre-Calculus LG 6 Unit 2 Practice Test #2



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

In the following graph, what transformations must be applied to the blue curve to obtain the red curve?
mc001-1.jpg
A
a reflection in the x-axis, a vertical translation 5 units up, and a horizontal translation 3 units to the right
B
a reflection in the x-axis, a vertical translation 5 units down, and a horizontal translation 3 units to the right
C
a reflection in the x-axis, a vertical translation 3 units up, and a horizontal translation 5 units to the left
D
a reflection in the x-axis, a vertical translation 3 units up, and a horizontal translation 5 units to the right
 

 2. 

The two functions in the graph shown are reflections of each other. Select the type of reflection(s).
mc002-1.jpg
A
a reflection in the y-axis
C
a reflection in the line y = x
B
a reflection in the x-axis and the y-axis
D
a reflection in the x-axis
 

 3. 

Which is the graph of the square root of the function mc003-1.jpg?
A
mc003-2.jpg
C
mc003-4.jpg
B
mc003-3.jpg
D
mc003-5.jpg
 

 4. 

Which graph represents the square root of the function shown in the graph?
mc004-1.jpg
A
mc004-2.jpg
C
mc004-4.jpg
B
mc004-3.jpg
D
mc004-5.jpg
 

 5. 

Which of the following functions is the correct inverse for the function mc005-1.jpg, {x | x ³ 0, x Î R}?
A
mc005-2.jpg = mc005-3.jpg
C
mc005-6.jpg
B
mc005-4.jpg = mc005-5.jpg
D
mc005-7.jpg = mc005-8.jpg
 

 6. 

Which graph represents the square root of the graph shown?
mc006-1.jpg
A
mc006-2.jpg
C
mc006-4.jpg
B
mc006-3.jpg
D
mc006-5.jpg
 

 7. 

Which graph represents the square root of the graph shown?
mc007-1.jpg
A
mc007-2.jpg
C
mc007-4.jpg
B
mc007-3.jpg
D
mc007-5.jpg
 

 8. 

Which graph shows the graphical solution to the radical equation mc008-1.jpg?
A
mc008-2.jpg
C
mc008-4.jpg
B
mc008-3.jpg
D
mc008-5.jpg
 

 9. 

Which graph shows the graphical solution to the radical equation mc009-1.jpg?
A
mc009-2.jpg
C
mc009-4.jpg
B
mc009-3.jpg
D
mc009-5.jpg
 

 10. 

If mc010-1.jpg is divided by mc010-2.jpg to give a quotient of mc010-3.jpg and
a remainder of –952, then which of the following is true?
A
mc010-4.jpgmc010-5.jpg = –952
B
mc010-6.jpg = mc010-7.jpgmc010-8.jpg – 952
C
mc010-9.jpgmc010-10.jpg = 952
D
mc010-11.jpg= mc010-12.jpgmc010-13.jpg + 952
 

 11. 

For a polynomial P(x), if mc011-1.jpg = 0, then which of the following must be a factor of P(x)?
A
mc011-2.jpg
C
mc011-4.jpg
B
mc011-3.jpg
D
mc011-5.jpg
 

 12. 

Which of the following is the fully factored form of mc012-1.jpg?
A
mc012-2.jpg
C
mc012-4.jpg
B
mc012-3.jpg
D
mc012-5.jpg
 

 13. 

Which of the following is the fully factored form of mc013-1.jpg?
A
mc013-2.jpg
C
mc013-4.jpg
B
mc013-3.jpg
D
mc013-5.jpg
 

 14. 

Which of the following graphs of polynomial functions corresponds to a cubic polynomial equation with roots 4, 1, and 3?
A
mc014-1.jpg
C
mc014-3.jpg
B
mc014-2.jpg
D
mc014-4.jpg
 

 15. 

Which of the following graphs of polynomial functions corresponds to a polynomial equation with zeros –6 (multiplicity of 2) and –1 (multiplicity of 2)?
A
mc015-1.jpg
C
mc015-3.jpg
B
mc015-2.jpg
D
mc015-4.jpg
 

Short Answer
 

 1. 

Create a graph of sa001-1.jpg for each base function given, using transformations.
a) sa001-2.jpg
b) sa001-3.jpg
 

 2. 

Determine the domain and range of each function.
a) sa002-1.jpg
b) sa002-2.jpg
c) sa002-3.jpg
 

 3. 

a) Sketch the graph of each function sa003-1.jpg, and then sketch the graph of sa003-2.jpg.
i) sa003-3.jpg
ii) sa003-4.jpg
iii) sa003-5.jpg
b) State the domain and range of each f(x) and g(x).
 

 4. 

a) Use long division to divide x3 + 3x2 – 7 by x + 2. Express the result in quotient form.
b) Identify any restrictions on the variable.
c) Write the corresponding statement that can be used to check the division.
d) Verify your answer.
 

 5. 

Solve by graphing using technology. Round answers to one decimal place.
a) x3 – 7 > 0
b) sa005-1.jpg
 

Problem
 

 1. 

Consider the function pr001-1.jpg.
a) Determine the square root of the function.
b) Graph the functions on the same set of axes.
c) State the domains and ranges of the graphs.
d) Describe the relationship between the domain and range of f(x) and the domain and range of g(x).
 

 2. 

Factor 3x4 + 5x3 – 13x2x + 6 fully.
 

 3. 

Prove that x2 + 5x + 6 is a factor of x4 + 5x3 + 2x2 – 20x – 24.
 

 4. 

The height, h, in metres, of a weather balloon above the ground after t seconds can be modelled by the function h(t) = –2t3 + 3t2 + 149t + 410, for pr004-1.jpg. When is the balloon exactly 980 m above the ground?
 

 5. 

Amit has designed a rectangular storage unit to hold large factory equipment. His model has dimensions 1 m by 2 m by 4 m. By what amount should he increase each dimension to produce an actual storage unit that is 9 times the volume of his model?
 



 
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