1 / 11

5-Minute Check Lesson 4-2

5-Minute Check Lesson 4-2. 4. If y varies inversely as x and y=3 when x=4, find y when x=15. Answer: 4/5. If y varies jointly as x and z and inversely as the square of w, and y=3 when x=3, z=10 and w=2, find y when x=4, z=20 and w=4. Answer: 2. 4-2 Warm Up #2.

talor
Download Presentation

5-Minute Check Lesson 4-2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 5-Minute Check Lesson 4-2 4. If y varies inversely as x and y=3 when x=4, find y when x=15. Answer: 4/5 • If y varies jointly as x and z and inversely as the square of w, and y=3 when x=3, z=10 and w=2, find y when x=4, z=20 and w=4. Answer: 2

  2. 4-2 Warm Up #2 Yes ; 0 = (-1)(-1) + 2(-1) + 1 The x-intercepts of the graph. X= -5/3 2; there are two x-intercepts in the graph x = -1.19 & x = 4.19 Is x = -1 a root of What does the root represent graphically in question #1? What is the root of How many roots does have? What are the roots of

  3. 4.2 - Quadratics Solving quadratics and using discriminants

  4. Quadratic Equations - form The discriminant can tell us how many roots/zeros a quadratic equation has . Calculated:

  5. Solving for roots/zeros of quadratics METHODS OF SOLVING QUADRATICS: • Factoring • Quadratic Formula • Graphing (finding x-intercepts) • Completing the square To solve , there are 4 methods:

  6. Solve the following by all 4 methods but first determine the # of solutions using the discriminant.

  7. Factoring Quadratic Formula Graphing (finding x-intercepts) Completing the square

  8. Finding Zeros of Quadratics Quadratic Equations - form You can solve a quadratic equation to determine the time it takes to drop a bean bag from an airplane!!

  9. Solve each of the following by any method but first determine the # of solutions using the discriminant. a.) b.)

  10. 4-2 Practice Worksheet

  11. Homework Pg 218 #1, 12-26E, 35, 38

More Related