Unit 8: Solving and Graphing Quadratics
Name
Date Tuesday February 23, 2016
Homework: Graphing Quadratic Vertex Form
Circle the term that determines if the parabola will open up or down. Then state the direction of
opening and identify the vertex.
Direction of Opening
2.
1 2
x − 3x + 4
2
2
y=
−3 ( x + 8 ) − 1
3.
y=
− x2 − 5x + 7
4.
y =( x − 5 ) + 9
1.
y=
2
Graph each parabola by using a table of values and identify the specified parts.
5.
y =( x − 2 ) − 9
2
Opens up or down?
Standard Form or Vertex Form?
x
y
Vertex:
Axis of Symmetry:
y-intercept:
x-intercept(s):
6.
y=
1 2
x + 4x + 8
2
Opens up or down?
Vertex:
Axis of Symmetry:
y-intercept:
x-intercept(s):
Standard Form or Vertex Form?
x
y
Vertex
7.
1
2
y=
− ( x + 2)
2
Standard Form or Vertex Form?
x
Opens up or down?
y
Vertex:
Axis of Symmetry:
y-intercept:
x-intercept(s):
8.
y=
−2 x 2 − 8 x
Standard Form or Vertex Form?
x
Opens up or down?
y
Vertex:
Axis of Symmetry:
y-intercept:
x-intercept(s):
9.
y =( x − 2 ) − 10
2
Opens up or down?
Standard Form or Vertex Form?
x
y
Vertex:
Axis of Symmetry:
y-intercept:
x-intercept(s):
10.
Answer each of the following using a complete sentence.
a. How do you determine if a quadratic equation is written in standard form or vertex form?
b. Identify one advantage to using standard form and one advantage to using vertex form.