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Graphing Quadratic Functions in Vertex Form
The vertex form of a quadratic function provides clues that help you identify important values of
the function. In this activity, you will use equations, tables and graphs to investigate these key
values.
1. Without graphing, make a prediction about the line of symmetry and the vertex of the
following quadratic functions:
( )
(
)
( )
(
)
( )
(
)
Line of symmetry___________
Line of symmetry___________
Line of symmetry___________
Vertex__________
Vertex__________
Vertex__________
Write a few sentences to support the reasoning behind your choices.
2. Now, create a table and graph of the quadratic functions below to check your predictions.
( )
(
)
a.
x
f(x)
Activity 8.2.2
CT Algebra I Model Curriculum Version 3.0