Objectives: To graph quadratic functions

Using your graphing calculator compare the graphs of the following:

y = x2

y = -x2

y = x2 + 4 y = -x2 – 3 y = 3x2

y = ¼ x2 + 2

Conclusions:

y = x2 + 1

1.Opens _______2.Axis of symmetry _________3.Vertex ________4.y-int _________5.Table of values

x y

y = -3x2 - 5

1.Opens _______2.Axis of symmetry _________3.Vertex ________4.y-int _________5.Table of values

x y

y = 1/3x2 +1

1.Opens _______2.Axis of symmetry _________3.Vertex ________4.y-int _________5.Table of values

x y

y = 1/2x2 + x + 3

1.Opens _______2.Axis of symmetry _________3.Vertex ________4.y-int _________5.Table of values

x y

y = -2x2 + 4x + 2

1.Opens _______2.Axis of symmetry _________3.Vertex ________4.y-int _________5.Table of values

x y

Pg 244 # 1-5, 10-13, 15,20