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Math 12 Pre-Calc LG 1-2 Practice Quiz #2



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

 1. 

In the following graph, which 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 of 4 units up, and a horizontal translation of 3 units to the right
B
a reflection in the x-axis, a vertical translation of 3 units up, and a horizontal translation of 4 units to the right
C
a reflection in the x-axis, a vertical translation of 3 units down, and a horizontal translation of 4 units to the right
D
a reflection in the x-axis, a vertical translation of 4 units up, and a horizontal translation of 3 units to the left
 

 2. 

In the graph shown, which transformations must be applied to the blue curve to obtain the red curve?
mc002-1.jpg
A
a reflection in the x-axis and a translation of 5 units down
B
a reflection in the y-axis and a translation of 5 units up
C
a reflection in the x-axis and a translation of 5 units up
D
a reflection in the y-axis and a translation of 5 units down
 

 3. 

Which graph represents the inverse of the graph shown?
mc003-1.jpg
A
mc003-2.jpg
C
mc003-4.jpg
B
mc003-3.jpg
D
mc003-5.jpg
 

 4. 

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

 5. 

Compared to the graph of the base function mc005-1.jpg, the graph of the function mc005-2.jpg is translated
A
5 units to the right
C
5 units down
B
5 units up
D
5 units to the left
 

 6. 

Given the graph of f(x) shown below, what are the coordinates of point A if the transformed graph is represented by mc006-1.jpg?
mc006-2.jpg
A
mc006-3.jpg
C
mc006-5.jpg
B
mc006-4.jpg
D
mc006-6.jpg
 

 7. 

The function mc007-1.jpg represents a transformation that can best be described as
A
a reflection in the x-axis
C
a reflection in the y-axis
B
a reflection in the x-axis and the y-axis
D
a reflection in the line y = x
 

 8. 

When b > 0, the function mc008-1.jpg has what relationship to the base function mc008-2.jpg?
A
f(x) is stretched vertically by a factor of |b| and reflected in the x-axis
B
f(x) is stretched vertically by a factor of |b|
C
f(x) is stretched horizontally by a factor of 1/|b| and reflected in the y-axis
D
f(x) is stretched horizontally by a factor of 1/|b|
 

 9. 

What are the coordinates of the invariant point(s) when the function mc009-1.jpg is reflected in the y-axis?
A
(2, –2)
C
(0, –2)
B
(–2, 0) and (2, 0)
D
(0, 2)
 

 10. 

When the value of a is less than –1, the function mc010-1.jpg has what relationship to the base function mc010-2.jpg?
A
f(x) is compressed vertically
B
f(x) is reflected and compressed vertically
C
f(x) is stretched vertically
D
f(x) is reflected and stretched vertically
 

Short Answer
 

 1. 

Given the graph of a function, sketch the resulting graph after the specified transformation.
a) reflection in the x-axis
sa001-1.jpg

b) reflection in the y-axis
sa001-2.jpg
c) reflection in the x-axis and the y-axis
sa001-3.jpg
 

 2. 

a) Sketch the graph of sa002-1.jpgfor each base function.
i) sa002-2.jpg
ii) sa002-3.jpg
iii) sa002-4.jpg
b) Write the equation for g(x) to represent a single stretch that results in the same graph as in each function in part a).
c) Describe how each stretch affects the domain and range for each function.
 

Problem
 

 1. 

Consider the function pr001-1.jpg.
a) Determine the equation of each function.
i) pr001-2.jpg
ii) f(–x)
iii) pr001-3.jpg
b) Graph all four functions from part a) on the same set of axes.
c) From the graph, determine the pairs of equations that can be represented as translations of each other.
d) Describe the translation that can be applied to each pair of functions you determined in part c) to generate the same graph.
 

 2. 

Consider the function pr002-1.jpg.
a) State the domain and range of the function.
b) Use this information to determine the domain and range of the inverse of the function.
c) Determine the inverse of the function.
d) Graph the function and its inverse on the same set of axes (include the line y = x to verify the inverse).
 

 3. 

The value, V, in thousands of dollars, of a certain car after t years can be modelled by the equation pr003-1.jpg.
a) Sketch the graph of this relation using transformations of the function pr003-2.jpg.
b) What is the initial value of this car?
c) What is the projected value of this car after 2 years?
 



 
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