1. Class Greeting

2. Chapter 10 Quadratic Equations and Functions
Lesson 10-4 Supplement
Forms of the Quadratic Function

3. Objective: Students will recognize and use the vertex and standard forms of quadratic functions.

4. Vertex Form of a Quadratic Function
Finding the Horizontal Intercepts of a Quadratic Function in Vertex Form
Vertex Form of a Quadratic Function
Vertex = (h, k)

5. Finding the Horizontal Intercepts of a Quadratic Function
in Vertex Form

6. Finding the Horizontal Intercepts of a Quadratic Function in Vertex Form
Determine the coordinates of the vertex and horizontal intercepts of the parabola. (If an answer does not exist, enter DNE.)
f(x) = −9(x + 10)2 + 18
(-10, 18)

7. Finding the Horizontal Intercepts of a Quadratic Function in Vertex Form
Determine the coordinates of the vertex and horizontal intercepts of the parabola. (If an answer does not exist, enter DNE.)
g(x) = −4(x − 10)2 + 20

8. Finding the Horizontal Intercepts of a Quadratic Function in Vertex Form
Determine the coordinates of the vertex and horizontal intercepts of the parabola. (If an answer does not exist, enter DNE.)
f(x) = −4(x − 10)2 + 20

9. Vertex and Intercepts in
Standard Form

10. Vertex & X-intercepts in Standard Form

11. f(x) = −9(x + 10)2 + 18
Standard Form

12. f(x) = −4(x − 10)2 + 20
Standard Form

13. Vertex & X-intercepts in Standard Form
Determine the coordinates of the vertex and horizontal intercepts of the parabola.
(If an answer does not exist, enter DNE.)
y = x2 + 2x + 4
METHOD 1
(-1, 3)
DNE
No Real Roots

14. Vertex & X-intercepts in Standard Form
Determine the coordinates of the vertex and horizontal intercepts of the parabola. (If an answer does not exist, enter DNE.)
y = x2 + 2x + 4
METHOD 2
(-1, 3)
DNE
h = -1 and k = 3
No Real Roots

15. Vertex & X-intercepts in Standard Form
Determine the coordinates of the vertex and horizontal intercepts of the parabola.
(If an answer does not exist, enter DNE.)
y = 5x2 + 6x + 1
Show both METHODS

16. Lesson Summary: Objective: The students will recognize and use the vertex and standard forms of quadratic functions.

17. Preview of the Next Lesson: Objective: The students will review for the chapter test.

18. Stand Up Please