1. Do Now 10/17/11 Take out HW from Friday. Take out HW from Friday. Punchline worksheet #38 Punchline worksheet #38 Copy HW in your planner. Copy HW in your planner. Text p. 74, #4-6, 14-19, 22-34 evens, 43, 44, 48, & 49 Text p. 74, #4-6, 14-19, 22-34 evens, 43, 44, 48, & 49 Quiz on equations Friday. Quiz on equations Friday. Be ready to copy Problem of the Week #6. Be ready to copy Problem of the Week #6.

2. Homework Punchline worksheet 38 “What Do Opticians, Optometrists, and Opthamologists Have In Common?” THEY ALL WENT TO EYE SCHOOL

3. Objective SWBAT use multiplication and division to solve equations

4. Equation- mathematical sentence with an equal sign Like a scale, both sides must be balanced

5. Equation Like a scale, the left side and right side must be the same in order to be balanced! Like a scale, the left side and right side must be the same in order to be balanced! 2 = 10 Left side Right side x ‘x’ has to be 5 in order to make the equation balanced.

6. Section 2-5 “Solving Equations Using Multiplication and Division” How can you get the “unknown” by itself? How can you get the “unknown” by itself? “Undo” the operation by using the INVERSE operation to both sides of the equation. -2y = 28 -2y = 28

7. Solving a Multiplication Equation -2y = 28 -2 -2 -2 -2 y = -14 “Undo” multiplication by dividing both sides of the equation

8. Check Your Work! -2y = 28 y = -14 -2(-14) = 28 Are both sides equal?

9. Try It Out 1). -7t = 63 2). -144 = 12d 3). 10x = 5 1). t = -9 -7(-9) = 63 2). d = -12 -144 = 12(-12) 3). x = ½ 10(½) = 5

10. Solving a Division Equation j = -7 5 5· · 5 j = -35 “Undo” division by multiplying both sides of the equation

11. Check Your Work! j = -7 5 j = -35 Are both sides equal? -35 = -7 5

12. Try It Out 1). r = -16 -16 ÷ 8 = -2 2). v = 32 32 = 8 4 3). a = -45 -9 = -45 5 1). r ÷ 8 = -2 2). v = 8 4 3). -9 = a 5

13. Find the width of the rectangle. Area = 38 cm² x 2 Area = 27 m² z 9 x = 19 cm z = 3 m 2x = 38 cm² 9z = 27 m²

14. Homework Text p. 74, #4-6, 14-19, 22-34 evens, 43, 44, 48, & 49 Text p. 74, #4-6, 14-19, 22-34 evens, 43, 44, 48, & 49 24

15. WAR!!! Using your boards solve the equations as fast as possible. If your number is called … you are at WAR!!