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Math 12 Pre-Calculus LG 3 Unit 1 Practice Test #3



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. 

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 of the following functions is the correct inverse for the function f(x) = mc003-1.jpgmc003-2.jpg?
A
mc003-3.jpg = mc003-4.jpgxmc003-5.jpg
C
mc003-9.jpg = mc003-10.jpgxmc003-11.jpg
B
mc003-6.jpg= mc003-7.jpgxmc003-8.jpg
D
mc003-12.jpg = mc003-13.jpgxmc003-14.jpg
 

 4. 

Which of the following functions is the correct inverse for the function mc004-1.jpg,
{x | x ³ 0, x Î R}?
A
mc004-2.jpg = mc004-3.jpg
C
mc004-6.jpg = mc004-7.jpg
B
mc004-4.jpg = mc004-5.jpg
D
mc004-8.jpg = mc004-9.jpg
 

 5. 

Which graph represents the inverse of the function 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
3 units up
C
3 units to the left
B
3 units down
D
3 units to the right
 

 7. 

Given the graph of f(x) shown below, what are the coordinates of point A if the transformed graph is represented by mc007-1.jpg?
mc007-2.jpg
A
mc007-3.jpg
C
mc007-5.jpg
B
mc007-4.jpg
D
mc007-6.jpg
 

 8. 

What is the equation of the transformed function, g(x), after the transformations are applied to the graph of the base function mc008-1.jpg, shown in blue, to obtain the graph of g(x), shown in red?
mc008-2.jpg
A
mc008-3.jpg
C
mc008-5.jpg
B
mc008-4.jpg
D
mc008-6.jpg
 

 9. 

When b > 0, the function mc009-1.jpg has what relationship to the base function mc009-2.jpg?
A
f(x) is stretched horizontally by a factor of 1/|b| and reflected in the y-axis
B
f(x) is stretched horizontally by a factor of 1/|b|
C
f(x) is stretched vertically by a factor of |b|
D
f(x) is stretched vertically by a factor of |b| and reflected in the x-axis
 

 10. 

Compared to the graph of the base function mc010-1.jpg, the graph of the function mc010-2.jpg is translated
A
9 units to the left and 5 units down
C
5 units to the right and 9 units up
B
9 units to the right and 5 units up
D
5 units to the left and 9 units down
 

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. 

For each function f(x),
i) determine sa002-1.jpg
ii) graph f(x) and its inverse
a) sa002-2.jpg
b) sa002-3.jpg
 

Problem
 

 1. 

Consider the function pr001-1.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).
 

 2. 

In ballistics, the paths of projectiles are studied. It is known that the greater the speed at which an object is fired, the farther it will travel. For a particular spring-loaded cannon, this relationship can be modelled by pr002-1.jpg, where d is the distance, in metres, travelled by the projectile and v is the muzzle speed, in metres per second.
a) Graph the distance function and state its domain and range.
b) Graph the inverse of the distance function. What does it represent? State its domain and range.
 

 3. 

Given the function pr003-1.jpg,
a) determine the inverse of the function
b) graph the function and its inverse on the same set of axes
 



 
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