Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… ·...
Transcript of Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… ·...
![Page 1: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/1.jpg)
Unit 3 Systems (5).notebook
1
October 27, 2016
Oct 257:57 PM
Bell Ringer
Review:
Explain what this means
![Page 2: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/2.jpg)
Unit 3 Systems (5).notebook
2
October 27, 2016
Oct 277:46 AM
![Page 3: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/3.jpg)
Unit 3 Systems (5).notebook
3
October 27, 2016
Oct 2010:10 PM
Quadratic Inequalities in one Variable
At the heart of solving any inequality is finding all values of the variable (or variables) that make the inequality true :
![Page 4: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/4.jpg)
Unit 3 Systems (5).notebook
4
October 27, 2016
Oct 258:18 PM
The key to algebraically solving a quadratic inequality is to first find the zeros and then test points between the zero’s and outside the zeros:
Notice that sometimes the MC answers tell you what theroots are so don't do thatwork all over again!!
![Page 5: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/5.jpg)
Unit 3 Systems (5).notebook
5
October 27, 2016
Oct 258:35 PM
![Page 6: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/6.jpg)
Unit 3 Systems (5).notebook
6
October 27, 2016
Oct 258:35 PM
![Page 7: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/7.jpg)
Unit 3 Systems (5).notebook
7
October 27, 2016
Oct 258:39 PM
![Page 8: Unit 3 - Systems (5).notebookmrwyan.weebly.com/.../3.3_1_variable_quad_eq_and_ineq_alg_graphi… · Exercise #4: Solve each of the following quadratic inequalities. (b) 5x2 +28x-12>0](https://reader036.fdocuments.in/reader036/viewer/2022090605/6059d64086b97c2157605c38/html5/thumbnails/8.jpg)
Unit 3 Systems (5).notebook
8
October 27, 2016
Oct 258:40 PM
Homework is a worksheet