1. Substitution Method

2. Solving systems of equations w/o graphing x+y=6 x=y+2 X Y Inside of the Y container, and inside of the X container are some little red donuts. How many little red donuts are in the Y container?

3. Solving systems of equations w/o graphing x+y= 6 x=y+2 X Y

4. Solving systems of equations without graphing x+y= 6 x=y+ 2 X Y

5. x+y= 6 x=y+2 X Y The first thing we want to do is line up the equal sign.

6. x+y=6 x=y+2 X Y What does X =?

7. x+y=6 x=y+2 X Y What does X =? x=y+2 So… y+2+y=6 Qwizdom

8. x+y=6 X Y x=y+2 y+2+y=6 Qwizdom

9. x+y=6 x=y+2 X Y So… y + 2 + y = 6 + + Y =

10. x+y=6 x=y+2 X Y y + 2 + y = 6 + + Y = Y Y + = 4

11. x+y=6 x=y+2 X y + 2 + y = 6 Y Y + = 4 How many Y’s do I have? 2y =4

12. x+y=6 x=y+2 X Y Y + = 4 How many Y’s do I have? 2y = 4 Y = Y

13. x+y=6 x=y+2 X Y 2y = 4 Y = If 2y’s give me 4, then how Many would one y give me?