Vertex Form Of A Quadratic Function
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1
2Name __________________________________________ Block ________ Date __________________
Algebra 1: Vertex Form of a Quadratic Function
2
Identify the opening direction, the width compared to
y
x
, the coordinates of the vertex, and
whether the vertex is a maximum or minimum.
2
2
2
2
1.
2.
y
7(
x
8)
1
3.
y
3
x
2
y
(
x
6)
4
5
Write a quadratic equation for a parabola with the given vertex.
4. ( 1, 7)
5. (3, 9)
6. ( 5, 0)
Use the method of completing the square to write each quadratic equation in vertex form and identify
the vertex. Then determine whether the vertex is a maximum or minimum and state its value.
2
2
2
7.
8.
y
x
16
x
18
9.
y
x
4
x
3
y
x
6
x
29
2
2
2
10.
y
x
2
x
17
11.
y
x
8
x
21
12.
y
x
10
x
45
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