Download presentation

Presentation is loading. Please wait.

Published byEstefani Cowser Modified over 2 years ago

1
MRS. SPANIER ALGEBRA 1 Solving Systems by Elimination

2
Solve Using Elimination 2x + y = 5 -2x + 3y = 7 + 4y = 12 y = 3 2x + 3 = 5 2x = 2 x = 1 POI = (1, 3)

3
Solve Using Elimination 1. -x + 2y = -8 x + 6y = -16 + 8y = -24 y = -3 x + 6(-3) = -16 x - 18 = -16 x = 2 POI = (2, -3)

4
Solve Using Elimination 2. x + 3y = 1 -5x + 3y = 7 - 6x = -6 x = -1 2(-1) + 3y = 1 -2 + 3y = 1 3y = 3 y = 2/3 POI = (-1, 2/3)

5
Solve the system. 2x + y = 5 -2x + 3y = 7 -2x + 3(-2x + 5) = 7 -2x – 6x + 15 = 7 -8x + 15 = 7 -8x = -8 x = 1 2(1) + y = 5 2 + y = 5 y = 3 POI = (1, 3) HW check today!

6
Solve Using Elimination 2. x + 3y = 1 -5x + 3y = 7 - 6x = -6 x = -1 -1 + 3y = 1 3y = 2 y = 2/3 POI = (-1, 2/3) x + 3y = 1 -5x + 3y = 7

7
OR… 2. x + 3y = 1 -5x + 3y = 7 + -6x = 6 x = -1 -1 + 3y = 1 3y = 2 y = 2/3 POI = (-1, 2/3) -1( ) -x + -3y = -1 -5x + 3y = 7

8
Solve using elimination 3.2x + y = 3 -x + 3y = -12 + 2x + y = 3 -2x + 6y = -24 7y = -21 y = -3 2( ) 2x + (-3) = 3 2x = 6 x = 3 POI = (3, -3)

9
Solve using elimination 4.4x – 3y = 15 2x – 3y = 9 - 4x – 3y = 15 4x – 6y = 18 3y = -3 y = -1 2( ) 4x – 3(-1) = 15 4x + 3 = 15 4x = 12 x = 3 POI = (3, -1)

10
Solve using elimination 4x + 5y = 35 2y = 3x – 9 + 12x + 15y = 105 -12x + 8y = -36 23y = 69 y = 3 3( ) 4x +5(3) = 35 4x + 15 = 35 4x = 20 x = 5 POI = (5, 3) 4( )

11
Solve using elimination 5. 3x = -6y + 12 -x + 3y = 6 6. 5x – 4y = 3 2x + 8y = -2 7. 2u = 4v + 8 3v = 5u – 13 POI = (0, 2) POI = ( ⅓, -⅓ ) POI = (2, -1)

12
Solve using any method. 2x + 5y = -24 3x – 5y = 14 POI = (-2, -4) HW check today!

Similar presentations

OK

MFM 2P Minds On Add or Subtract the following equations in order to make “y” equal 0.

MFM 2P Minds On Add or Subtract the following equations in order to make “y” equal 0.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on regional rural banks in india Ppt on domain name system Ppt on obesity management program Ppt on chemical and magnetic effect of electric current Ppt on rain water harvesting methods Ppt on eeo training in federal government Disaster management ppt on tsunamis Ppt on positive thinking Ppt on motivation in hindi Ppt on area of parallelogram and triangles in real life