Download presentation

Presentation is loading. Please wait.

Published byAdrian Biggerstaff Modified over 2 years ago

1
9.5 Solving Quadratic Equations by Graphing Ms. Wu

2
Warm-Up

3
Objectives Warm-Up (5 min.) Reminder 101 (3 min.) Review (10 min.) Quiz, Evaluation, Folder Organization ( 27 min.) Introduction (5 min.) 9.5 Workshop (20 min.) In-Class Assignment (20 min.)

4
Remind 101 – 3rd

5
Remind 101 – 4 th

6
Review Vertex (2, -1) y-int (0, 3) Axis of Symmetry x = 2 Domain: all real numbers Range: y ≥ -1 Minimum Opens UP Zeros: 1 and 3

7
Review For the parent function, y = x 2, what is the transformed function that is ____________? 7 units up: y = x 2 + 7 2 times wider: y = ½x 2 1/3 times narrower and down 1 unit: y = 3x 2 – 1

8
Review For the function, y = x 2 +2x-1, what is the ________? Axis of symmetry? x = Vertex: (-1, -2) Does it open up or down? UP Is it a maximum or minimum? MINIMUM y-intercept: (0, -1) Domain: all real numbers Range: y ≥ -1

9
Quiz -> Evaluation - > Organization -> Lunch Notes 9.1 9.2 9.3 9.4 Roller Coaster 1 st Blueprint 2 nd Blueprint Homework 9.1 9.2 9.3 9.4 In-Class Assignments 9.2 Exploration (Axis of Symmetry) 9.4 Transformers Exploration Is your folder ready for an organization grade?? Everything must be completed…folders will be picked up for a grade next class period!!

10
Announcement Go to Ms. Wu’s website: annwustudentteaching.webs.comannwustudentteaching.webs.com Go to the tab “For Students (3 rd & 7 th )” New Format: Homework: Watch videos, take notes In-Class: Work on assignment, get help, quiz

11
Solving Quadratic Equations by Graphing A quadratic function is a function that can be written in the standard form y = ax 2 +bx+c. A quadratic equation is an equation that can be written in the standard form 0 = ax 2 +bx+c. When writing a quadratic function as its related quadratic equation you replace y with 0. Then, you solve the equation by finding its zero(s) or roots or x-int.

12
Ms. Wu’s hint: Remember to move everything to one side until you have everything equal to 0! Examples: 1. x 2 -8x-16=2x 2 -x 2 -8x-16 = 0 zero: -4 2. 6x+10=-x 2 x 2 +6x+10=0 zero: none 3. –x 2 +4 = 0 zeros: -2, 2

13
Parabolic Solar Ovens Video: Parabolic Solar Ovens in Coast RicaParabolic Solar Ovens Video: How to Cook Food Using Solar OvensHow to Cook Food Using Solar Ovens

16
Joseph is trying to build a solar oven in his backyard to cut down on the cost of electricity. He did some research and found that the sun’s rays are best captured by the quadratic function y = x 2 -8x+12. Question: Joseph needs to buy a parabolic mirror at Lowe’s, how wide should the diameter of the mirror be?

17
Mirror needs to be 4 feet in diameter.

18
In-Class & Homework Complete the evens on 9-5. Turn in by the end of class. Homework: complete notes on how to FOIL and FACTOR. Watch videos online. Organize folder!!

Similar presentations

OK

5-1 Graphing Quadratic Functions Algebra II CP. Vocabulary Quadratic function Quadratic term Linear term Constant term Parabola Axis of symmetry Vertex.

5-1 Graphing Quadratic Functions Algebra II CP. Vocabulary Quadratic function Quadratic term Linear term Constant term Parabola Axis of symmetry Vertex.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on history of indian railways Knowledge based view ppt on mac Ppt on event driven programming languages Ppt on digital media broadcasting system Ppt on eddy current equipment Ppt on solar power satellites sps Ppt on phonetic transcription converter Ppt on sources of energy for class 8th december Authority of the bible ppt on how to treat Ppt on computer science engineering