Presentation is loading. Please wait.

Presentation is loading. Please wait.

Substitution. Take OUT the variable and PUT in the new expression y = 4x + 1 2x – y = 9 y = 4x + 1 2x – y = 9 -2x – 3 = 6x + 1 y = -2x -3 y = 6x + 1 y.

Similar presentations


Presentation on theme: "Substitution. Take OUT the variable and PUT in the new expression y = 4x + 1 2x – y = 9 y = 4x + 1 2x – y = 9 -2x – 3 = 6x + 1 y = -2x -3 y = 6x + 1 y."— Presentation transcript:

1 Substitution

2 Take OUT the variable and PUT in the new expression y = 4x + 1 2x – y = 9 y = 4x + 1 2x – y = 9 -2x – 3 = 6x + 1 y = -2x -3 y = 6x + 1 y = -2x - 3 y = 6x +1 2x – (4x + 1) = 9

3 Take OUT the variable and PUT in the new expression y = 4x + 1 2x – 2y = 9 y = 4x + 1 2x – 2y = 9 y = 6(-2x – 3) + 1 x = -2x -3 y = 6x + 1 x= -2x - 3 y= 6x +1 2x – 2(4x + 1) = 9

4 Your Turn! Write the NEW equation after you substitute.

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

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

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

8 (-5x-17) = -x – 1 or (-x – 1) = -5x - 17 y = -x -1 Y = -5x - 17

9 4x – 3(-2) = 18 y = -2 4x – 3y = 18

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

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

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

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


Download ppt "Substitution. Take OUT the variable and PUT in the new expression y = 4x + 1 2x – y = 9 y = 4x + 1 2x – y = 9 -2x – 3 = 6x + 1 y = -2x -3 y = 6x + 1 y."

Similar presentations


Ads by Google