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Math 12 LG 3 Unit 1 Practice Test #2



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

 1. 

The two functions in the graph shown are reflections of each other. Select the type of reflection(s).
mc001-1.jpg
A
a reflection in the line y = x
C
a reflection in the y-axis
B
a reflection in the x-axis and the y-axis
D
a reflection in the x-axis
 

 2. 

Which is the graph of the function mc002-1.jpg?
A
mc002-2.jpg
C
mc002-4.jpg
B
mc002-3.jpg
D
mc002-5.jpg
 

 3. 

In the graph shown, which transformations must be applied to the blue curve to obtain the red curve?
mc003-1.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
 

 4. 

When the function mc004-1.jpg is transformed to mc004-2.jpg, the graph looks like
A
mc004-3.jpg
C
mc004-5.jpg
B
mc004-4.jpg
D
mc004-6.jpg
 

 5. 

Which graph represents the inverse of the graph shown?
mc005-1.jpg
A
mc005-2.jpg
C
mc005-4.jpg
B
mc005-3.jpg
D
mc005-5.jpg
 

 6. 

Compared to the graph of the base function mc006-1.jpg, the graph of the function mc006-2.jpg is translated
A
9 units to the left
C
9 units down
B
9 units to the right
D
9 units up
 

 7. 

Compared to the graph of the base function mc007-1.jpg, the graph of the function mc007-2.jpg is translated
A
9 units to the right
C
9 units down
B
9 units up
D
9 units to the left
 

 8. 

Given the graph of f(x) shown below, what are the coordinates of point A if the transformed graph is represented by mc008-1.jpg?
mc008-2.jpg
A
mc008-3.jpg
C
mc008-5.jpg
B
mc008-4.jpg
D
mc008-6.jpg
 

 9. 

What is the equation of the transformed function, g(x), after the transformations are applied to the graph of the base function mc009-1.jpg, shown in blue, to obtain the graph of g(x), shown in red?
mc009-2.jpg
A
mc009-3.jpg
C
mc009-5.jpg
B
mc009-4.jpg
D
mc009-6.jpg
 

 10. 

Which of the graphs shown below represents the base function mc010-1.jpg and the stretched function g(x) = (mc010-2.jpgx)2?
A
mc010-3.jpg
C
mc010-5.jpg
B
mc010-4.jpg
D
mc010-6.jpg
 

Short Answer
 

 1. 

For each function f(x),
i) determine sa001-1.jpg
ii) graph f(x) and its inverse
a) sa001-2.jpg
b) sa001-3.jpg
 

 2. 

a) Determine the inverse of the function sa002-1.jpg.
b) Determine the domain and range of the function and its inverse.
c) Is the inverse a function? Explain.
 

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. 

The value, V, in thousands of dollars, of a certain car after t years can be modelled by the equation pr002-1.jpg.
a) Sketch the graph of this relation using transformations of the function pr002-2.jpg.
b) What is the initial value of this car?
c) What is the projected value of this car after 2 years?
 

 3. 

Jai works at an electronics store. She earns $600 a week, plus commission of 5% of her sales.
a) Write a function to describe Jai’s total weekly earnings as a function of her sales.
b) Determine the inverse of this function.
c) One week Jai earned $775. What were her sales that week?
 



 
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