PRESENTATION OF LESSONS

1. OBJECTIVES:
a. Graph Quadratic Function and Linear
Function,
b. Differentiate the graph of Linear Function
and Quadratic Function, and
c. Participate actively in class activities.

2. Graphing Quadratic
Functions

3. Group Activity ( Plot me!)
Direction:
Each group will be given a manila paper for the activity, graph the following functions
and try to identify what kind of graph was shown. Each group will have a reporter to
present the output of their group and answer the questions below.
A. f(x) = x+1
B. f(x) = x2
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Question #1. How did you graph the functions and what are
the graphs shown by the functions?
Question #2. What is the difference of the graphs shown?

4. The graph of a quadratic function
y = ax2 + bx + c is called parabola.
If the value of a > 0, the parabola opens upward and has a minimum
point. If a < 0, the parabola opens downward and has a maximum
point. There is a line called the axis of symmetry which divides the graph
into two parts such that one-half of the graph is a reflection of the other half.

5. Quiz: In a ¼ sheet of paper. Graph the function and describe whether the
parabola opens upward or downward.
1. f(x) = x2
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6. ASSIGNMENT:
In ½ sheet of paper answer