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Quiz Review: Vertex Form & Quad Transformations
By Jeanmarie Mullen
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Last updated over 4 years ago
17 questions
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Question 1
1.
What is the equation of the parabola below?
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Question 2
2.
Identify the vertex and the y-intercept of the graph of the function y = 3(x + 2)
2
- 5 .
vertex: ( -2 , -5 ) ; y-intercept: 7
vertex: ( 2 , 5 ) ; y-intercept: 12
vertex: ( 2 , -5 ) ; y-intercept: 7
vertex: ( -2 , 5 ) ; y-intercept: -1
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Question 3
3.
In the function f(x) = (x − 2)
2
+ 4, the minimum value occurs when x is
-2
2
-4
4
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Question 4
4.
If Lylah is given the equation f(x) = x
2
− 12x + 7 in order to find the minimum, she must write f(x) in the general form f(x) = (x − h)
2
+ k.
What is the value of h for f(x)?
12
-6
6
-12
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Question 5
5.
Describe the transformation of f(x) = x
2
represented by g(x) = (x + 4)
2
− 1. Select all that apply.
The graph of g(x) is a horizontal translation 4 units left.
The graph of g(x) is a horizontal translation 4 units right.
The graph of g(x) is a vertical translation 4 units up.
The graph of g(x) is a vertical translation 4 units down.
The graph of g(x) is a vertical translation 1 unit up.
The graph of g(x) is a vertical translation 1 unit down.
The graph of g(x) is a horizontal translation 1 unit left.
The graph of g(x) is a horizontal translation 1 unit right
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Question 6
6.
Write in vertex form: f(x) = x
2
+ 12x + 32.
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Question 7
7.
Graph f(x)=x
2
, g(x)=x
2
+ 2, and h(x)=x
2
− 2 on the same coordinate plane using your calculator.
Describe what effect adding a constant to the function has on the parent function.
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Question 8
8.
Identify the vertex and axis of symmetry by converting to vertex form. Then sketch the graph.
f(x) = −x
2
− 6x − 10
Vertex: (−3, 1) Axis of Sym.: x = 1
Vertex: (−1, −3) Axis of Sym.: x = −1
Vertex: (−3, −1) Axis of Sym.: x = −3
Vertex: (3, −1) Axis of Sym.: x = 3
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Question 9
9.
Determine the quadratic function whose graph is shown.
Write the equations f(x) = in vertex form.
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Question 10
10.
Hannah went to the board and graphed the function h(x) = x
2
.
Then, Giana went up and graphed the function g(x) = 5(x - 2)
2
+ 3 .
How does Giana's graph compare to Hannah's graph?
Giana's graph is wider, 2 units to the right, and 3 units up.
Giana's graph is more narrow, 2 units to the left, and 3 units up.
Giana's graph is more narrow, 2 units to the left, and 3 units down.
Giana's graph is more narrow, 2 units to the right, and 3 units up.
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Question 11
11.
The vertex of the parabola represented by f(x) = x
2
- 2x - 3 has coordinates (1, -4).
Find the coordinates of the vertex of the parabola defined by g(x) = f (x - 3) .
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Question 12
12.
The vertex of the parabola represented by f(x) = x
2
- 2x - 3 has coordinates (1, -4).
If h(x) is a translation of f(x) where h(x) = f(x + 3) + 7 , what are the coordinates of the vertex of h(x) ?
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Question 13
13.
If k(x) = -2f ( x ) how will the parabola k(x) differ from the original f(x) .
Check all that apply.
k(x) will be more narrow than f(x) .
k(x) will be wider than f(x) .
k(x) will be a reflection of f(x) over the x-axis.
k(x) will be a shift left.
k(x) will be a shift right.
k(x) will be a shift up.
k(x) will be a shift down.
Question 14
14.
Write the vertex form of the parabola y = x
2
- 16x + 70 .
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Question 15
15.
Write the standard form equation of the following parabola: y = (x − 2)
2
− 2.
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Question 16
16.
The graph below shows the function f(x) = x
2
.
Draw the graph of g(x) = f(x - 4) + 1 .
What are the coordinates of of g(x) ?
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Question 17
17.
The graph below shows the function f(x) = x
2
.
Draw the graph of h(x) = 2 f(x) - 3 .
What are the coordinates of of h(x) ?
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