Graphing Quadratics-Using the Graphing Calculator

By:Bradley Hinken

&Shaddi Alnouri

Table of Constance

Slide 1: TitleSlide 2: T of CSlide 3: ExplanationSlide 4: Steps To Help U SolveSlide 5: PracticeSlide 6: Fun Links

Slide 7: Thank You

Quadratic EquationsStandard Form: y=ax2+bx+cWhen a quadratic equation is

graphed, it is called a parabola. A parabola basically looks like a U or

an upside down U. Or as Mrs. K says a “smiley” or a “frown”.

Steps To Help U Solve• Click the Y= Button• Click GRAPH• To find the Vertex

o Click 2nd then TRACE. o Than scroll down to minimum or

maximum (according to the graph)

o Put the curser on the vertexo Then press the left button twice

than hit entero Line back up with the vertexo Press the right button twice and

hit entero Now hit enter againo Look at the x, y values it gave uo The x value is the Axis of

Symmetryo And together they are your

vertex

Note: Always clear the memory 1st (2nd , + , 7, 1,2)Note: When Graphing Press the ZOOM Button Then the # 6 to see the Graph in a Standard WindowNote: If u cannot see the vertex on the graph go to window and change it accordinglyNote: Mrs. K calls 2nd the “Blue Button”Note: TRACE is under the screenNote: You hit enter the 2nd time only if u don’t want a guess

Things To Remember

1.ALWAYS CLEAR THE MEMORY 1ST

2.On the Graphing Calcs the minus sign is different then the subtract. (It will mess up the graph)

3.Solutions are called ZEROS on the Graphing Calc

4. The “BLUE BUTTON” is the 2nd Button5.

Practice

1.3x2+3x+2ANSWER

2. 5x2-3ANSWER

3. 5x2-2x+55ANSWER

4. 5x2-20x+2ANSWER

5. 5x2-20x+2ANSWER

6. 10X2-2X-4ANSWER

7. X2-X+2 ANSWER

8. X2-4X-20ANSWER

9. 5X2-8X+2ANSWER

10. 10X2-12X+12ANSWER

Fun Links

1. http://www.purplemath.com/modules/quadform.htm

2. http://www.quia.com/cb/24731.html 3. http://jwilson.coe.uga.edu/emt668/EMAT6680.Folders/Barron/unit/Lesson%206/6.html

Thank you for Visiting this PowerPoint. You have

contributed to your education. WE were happy to help.

Publisher: Hinken EnterprisesDesigner: SA Arts

Authors: Bradley Hinken & Shaddi Alnouri

TradeMark: Hinken Enterprises

Answers 1-2

1.Vertex: (-0.5, 1.25)A of S: -0.5BACK TO PROBLEMS

2. Vertex: (0,3)A of S: 0BACK TO PROBLEMS

Answers 3-4

3. Vertex: (0, 55)A of S: 0BACK TO PROBLEMS

4. Vertex: (0.2, -20)A of S: 0.2BACK TO PROBLEMS

Answers 5-6

5. Vertex: (2, -18)A of S: 2BACK TO PROBLEMS

6. Vertex: (0, -4.1)A of S: 0BACK TO PROBLEMS

Answers 7-8

7. Vertex : (0.5, 1.75)A of S: 0.5BACK TO PROBLEMS

8. Vertex: (2, -24)A of S: 2BACK TO PROBLEMS

Answers 9-10

9. Vertex: ( 0.8, -1.2)A of S: 0.8BACK TO PROBLEMS

10. Vertex: (0.5, 9)A of S: 0.5BACK TO PROBLEMS

STOP!!!