1 / 7

Solving for Variables (Y)

Solving for Variables (Y). By: Derek Mauriello, Vanessa Law, Ivan Williams. Definitions. Variable - a quantity or function that may assume any given value or set of values Isolating the “y” - put the y variable by itself to solve an equation

benita
Télécharger la présentation

Solving for Variables (Y)

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. Solving for Variables(Y) By: Derek Mauriello, Vanessa Law, Ivan Williams

  2. Definitions • Variable- a quantity or function that may assume any given value or set of values • Isolating the “y”- put the y variable by itself to solve an equation • Substituting to solve for “y”- substitute x-coordinate point to solve for the y-coordinate point • Using Substitution to solve for “y”- two different equation to substitute

  3. Isolating The “Y” • The y-variable is accompanied by a integer on the left side • In order to isolate the y-variable the y must be by itself, in order to do that the integer has to use inverse operation • Since the y has a value of 2, the value will be divided on both sides • Now the y is finally isolated! • 2y – 7 = 6x - 1 • 2y – 7 = 6x - 1 • +7 +7 • 2y = 6x + 6 • 2y = 6x + 6 • 2 2 2 • y = 3x + 3 Inverse Division

  4. Using Combination To Solve For “Y” • There are two equations now since there y can be “cancelled out” we can add the two equations, then use the inverse • Now that we have x we need to substitute into an equation • 6x – 7 = 2y – 1 • +-5x + 4=-2y - 5 • x -3= -6 • +3 +3 • x = - 3 • 6 (-3) – 7 = 2y – 1 • -18 – 7 = 2y – 1 • -25 = 2y – 1 • +1 +1 • -24 = 2y • 2 2 • y = -12

  5. Substituting To Solve For “Y” • So we have the x-coordinate point is 4 and we want to solve for the y-coordinate point so we substitute • Then we multiply 3 and 4 which equals 12 • After, add 12 and 3 which equals 15 • The coordinate points would be (4, 15) • y = 3x + 3 • y = 3 (4) + 3 • y = 12 + 3 • y = 15

  6. Common Mistakes • Make sure what you do on 1 side of the equal sign you do the exact same thing on the other • Don’t forget to use the inverse to isolate the y • Make sure when substituting the x-coordinate you use PEMDAS to get the right result for the y-coordinate

  7. Cites: • http://dictionary.reference.com/ • http://www.google.com/imghp?hl=en&tab=wi • http://www.youtube.com/ -First Song: School Of Rock- Jack Black -Second Song: All I Do Is Solve (WSHS Math Rap Song) Original Song is All I Do Is Win by DJ Khaled

More Related