Download presentation

Presentation is loading. Please wait.

1
Substitution

2
**Take OUT the variable and PUT in the new expression**

y = 4x + 1 2x – y = 9 y = -2x -3 y = 6x + 1 y = 4x + 1 2x – y = 9 y = -2x - 3 y = 6x +1 2x – (4x + 1) = 9 -2x – 3 = 6x + 1

3
**Take OUT the variable and PUT in the new expression**

y = 4x + 1 2x – 2y = 9 x = -2x -3 y = 6x + 1 y = 4x + 1 2x – 2y = 9 x= -2x - 3 y= 6x +1 2x – 2(4x + 1) = 9 y = 6(-2x – 3) + 1

4
**Write the NEW equation after you substitute.**

Your Turn! Write the NEW equation after you substitute.

5
y = 6x – 11 -2x – 3y = -7 -2x – 3(6x-11) = -7

6
2x – 3y =-1 y = x - 1 2x – 3(x-1) = -1

7
y = -3x +5 5x – 4y = -3 5x – 4(-3x + 5) = -3

8
**(-5x-17) = -x – 1 or (-x – 1) = -5x - 17**

y = -x -1 Y = -5x - 17 (-5x-17) = -x – 1 or (-x – 1) = -5x - 17

9
y = -2 4x – 3y = 18 4x – 3(-2) = 18

10
x= -2y x – 2y = -13 -7(-2y + 11) – 2y = -13

11
y = -5x – 21 y = 4x +6 (-5x - 21) = 4x + 6 or (4x + 6) = -5x - 21

12
y = 1/2x – 2 -5x + y = -2 -5x + (1/2x-2) = -2

13
x = -3y x – 3y = -15 -3(-3y + 1) – 3y = -15

Similar presentations

Presentation is loading. Please wait....

OK

ALGEBRAIC EXPRESSIONS

ALGEBRAIC EXPRESSIONS

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on child labour in world Download ppt on pulse code modulation theory Ppt on 2nd world war american Ppt on environmental chemistry class 11 Ppt on agriculture and food security Ppt on brand marketing definition Ppt on online registration system Ppt on review of literature apa Ppt on power sharing in democracy the will of the majority Ppt on generating electricity by walking