Algebra
Unit 8
Name
Graphing Quadratic Equations
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Period
Directions: Graph each of the following quadratic equations by first finding the xintercepts, and then finding the vertex. Show all work.
$a
:a
b
2. y=x2-6x-27
4. y=2x2-16x+14
5. y= 3x2 -12
6. y=4x2 -16x+15
Check x-intercepts:
(-8,0)
(-3,0)
(-3,0)
(-2,0)
----
(-2,O)
(1,0)
(1.5,0)
(2,0)
Check values for each vertex:
(2.5,0)
(5,0)
(7,0)
(9,0)
-36
-9
1
-18
-5
2
-16
-1
3 .
-12
°
4
~i
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