1 / 20

Graph y 2x y x 3

maine
Download Presentation

Graph y 2x y x 3

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. Graph y = 2x & y = x + 3

    2. Graph x - y = 2 & 2x + y = 1 y = x - 2 & y = -2x + 1

    3. Check this out Now Consider what happens when we add the two equations y = 2x y = x + 3

    4. Graph 2y = 3x + 3 or y = 3/2x + 3/2

    5. Graph 2y = 3x + 3

    6. Objective To be able to solve a system of equations by using the linear combination (add) method

    7. 1.) Solve by Addition (elimination) 2x + 3y = 7 x - 3y = 8

    8. 1.) Solve by Addition (elimination) 2x + 3y = 7 2(5) + 3y = 7 10 + 3y = 7

    9. 2.) Solve by Addition (elimination) 3a = 2b + 7 2b = 9 - a

    10. 2.) Solve by Addition (elimination) 3a - 2b = 7 a +2b = 9

    11. 2.) Solve by Addition (elimination) 2b = 9 - a 2b = 9 -(4) 2b = 5 b = 5/2

    12. 3.) You try This one 2x - y = 7 x+ y = 2

    13. 3.) You try this one x + y = 2 (3) + y = 2

    14. Be ready to answer 1.) What are the other two methods of solving two equations? 2.) What do you do, before you add, if the terms of the equation aren’t lined up?

    15. How many solutions do the following equations have? 1.) x = 3y 2x - y = 5 2.) 8x - 4y = -32 -2x + y = 8 One (3,1) Many

    16. How many solutions do the following equations have? 1.) y = 3x -2 3y + 2 = 9x 2.) y = 1/4x + 3 8y - 3x = 12 None One (12,6)

    17. Graph y = 3x + 4

    18. Graph 2x + y = -1 y = -2x + -1

    19. Graph -2x - y = -5 y = -2x + 5

    20. Graph y = 2x & y = x + 3

More Related