1 / 10

System of Equations: Substitution and Elimination Day 2

System of Equations: Substitution and Elimination Day 2. Example #1. x = 2y – 3 3x + 2y = 7. Example #2. 3x + 4y = -5 5x + 6y = -7. Example #3. 3x – y = 4 5x + 3y = 9. Example #4. -8x - 6y = -14. 8x + 6y = 14. 0 = 0.

liesel
Download Presentation

System of Equations: Substitution and Elimination Day 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. System of Equations:Substitution and EliminationDay 2

  2. Example #1 x = 2y – 3 3x + 2y = 7

  3. Example #2 3x + 4y = -5 5x + 6y = -7

  4. Example #3 3x – y = 4 5x + 3y = 9

  5. Example #4 -8x - 6y = -14 8x + 6y = 14

  6. 0 = 0 When you get that 0=0, this means that you have a consistent dependent system Which means infinite solutions!

  7. Example #5 -2x - y = -1 2x + y = 5

  8. 0 = 4 Which means no solution! When you get a false statement, this means they are parallel lines, an inconsistent system.

  9. Example #6 Belinda had $20,000 to invest. She invested part of it at 10% and the remainder at 12%. If her income from the two investments was $2,160, then how much did she invest at each rate? x + y = 20,0000 0.10x + 0.12y = 2160

  10. Example #7 On Monday, Archie paid $3.40 for three doughnuts and two coffees. On Tuesday he paid $3.60 for two doughnuts and three coffees. On Wednesday he was tired of paying the tab and went out for coffee by himself. What was his bill for one doughnut and one coffee?

More Related