1. Chapter 5.7/Day 2 Quadratic Functions in Vertex Form
Target Goals:
1. Write/graph equations in vertex form
2. Identify the vertex, axis of symmetry, and direction of opening.

2. OPENER/REVIEW Graph the function
y-intercept:
Axis of symmetry:
Vertex:
Direction of opening: UP

3. 2 Forms for Quadratic Functions
Quadratic Form
Vertex Form
Yesterday
TODAY!!!

4. VERTEX FORM: (h, k) If a is +, then opens UP.
AXIS of SYMMETRY:
(h, k)
VERTEX:
DIRECTION of OPENING:
If a is +, then opens UP.
If a is -, then opens DOWN.

5. Ex 1) Graph using vertex form:
(3, -2)
A.O.S.:
x = 3
Direction:
UP!

6. Ex 2) Graph using vertex form.
(-3, 1)
A.O.S.:
x = -3
Direction:
DOWN!

7. Ex 3) Which is an equation of the function shown in the graph?
A. B. C. D.
Vertex?
(3, 2)
Opens?
DOWN

8. Ex 4) APPLICATION!
During an Independence Day fireworks show, the height h in meters of a specific rocket after t seconds can be modeled by
What is the maximum height of the rocket?
What is the time when this maximum height occurs?

9. “Fist of 5” 1 5

10. Target Goals Accomplished?
“Write/graph equations in vertex form.”
Ex’s 1, 2, 3, 4, 5
“Identify the vertex, axis of symmetry, and direction of opening.”
HW – page 308 #4, 5, 7, 22, 24-26, 29-31, 33, 35, 37, 63-65