Luttrell 2012
136
Name: ______________________
Date: _____
5 - Quadratic Functions
Convert the quadratic equations into Vertex Form. Graph.
1.
y
= 3
x
2
- 12
x
+ 5
2.
y
= -2
x
2
+ 8
x
- 3
3.
y
> 5
x
2
+ 10
x
+ 12
Verify the number of solutions by using the discriminant.
4. 0 = 3
x
2
+ 4
x
+ 5
5. 2
x
2
- 3
x
= 3
6.
x
2
+ 2
x
= 5 - x
7. Write the quadratic equation that passes through (-3, 37), (1,1), and (2,7).
For #8- #10,use
f(x)
= 3
x
2
+
x
- 2 to find
x
such that the equation is true.
8.
f(x)
= 0
9.
f(x)
= 3
10.
f
(5
)
=
x