# SWBAT… solve two step equations Agenda 1. Warm-up & common mistakes (10 min) 2. Quiz (5 min) 3. Binder Check (15 min) 4. Two-step equations (15 min) Warm-Up:

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SWBAT… solve two step equations Agenda 1. Warm-up & common mistakes (10 min) 2. Quiz (5 min) 3. Binder Check (15 min) 4. Two-step equations (15 min) Warm-Up: Which expression is equivalent to 2x + 3y − 5x 2 − 10y + 7x 2 ? 1. 4x 2 − 7y 2. 2x 2 + 2x − 7y 3. 2x 2 − 5xy 4. 2x + 13y + 12x 2 HW#3: Two-Step Equations Fri, 10/29/10

Before the quiz… common mistakes 1. When CLT, don’t forget about the sign in front of the variable 2. (-1) 2 1. (-1) 2 = (-1)(-1) = 1 2. Use parenthesis! 3. Always simplify: -9 – 5 = -14 4. +- 5. - - 6. Name the three terms 1. Name three terms. For example, n 2, 8n, 7

Binder Check 1. Take out your binders and place your binder evaluation sheet on the binder 2. Exchange binders with the person next to you

Homework 1. TRY hw#3: there are examples already done for you!!!! 2. FOLLOW THE EXAMPLES!!! You can do it!

SWBAT…solve two-step equations Agenda 1. Solving equations on poster board (15 min) 2. Gallery walk (30 min) Warm-Up. 1.) On your poster, solve your equation. Show all work (but you already knew that!) 1. Write out the steps as you solve the problem 2. CHECK your answer HW#3-Solving Algebraic Equations – Two Step (solve and check each equation) Mon, 11/4/10

Gallery Walk Instructions The person in your group whose birthday is closest to today’s date (November 1) will first stay with your poster to explain how you solved the equation The other person will be rotating to the different stations with your hw#3 When I say rotate (after 3-4 minutes) you will rotate clockwise to the next poster After 3 rotations, you and your partner will switch

SWBAT… solve multi-step equations QUIZ: Solve and check each equation: 1.) 2a – 5 = 7 2.) 7 – w = -4 3.) EC: Solve for h: A = 2πr2 + 2πrh Tues, 11/5/10

SWBAT…evaluate expressions, CLT, distributive property and two-step eqns Agenda 1. WU (5 min) 2. White board practice – equations (40 min) Warm-Up. Grab a white board, marker, eraser Do practice problems on the back of agenda Wed, 11/6/10

Directions: On your tablets, you will be solving equations. You will have 1-3 minutes to solve each problem (SHOW YOUR WORK – ALL STEPS!) When you hear the timer go off, show me your tablets.

1/23 Simplify: (n)(n) n 2

2/23 Simplify: (12n)(n 2 ) 12n 3

3/23 Simplify: n + n + n 3n

4/23 Evaluate x 2 when x = -10 100

5/23 Evaluate -x when x = -2 2 (FYI: we’ll be using this when graphing lines, such as y = -x)

6/23 Evaluate 2x 2 – y + x when x = -3 and y = -6 21

7/23 If 2n = -60, find the value of 5n -150

8/23 Simplify: -7(x – 8) -7x + 48

9/23 -(a + 1) -a – 1

10/23 5t(2t – 20) 10t 2 – 100t

11/23 Simplify: -4x + 3y − 5x 2 − 11y + 7x 2 2x 2 – 4x – 8y

12/23 a = 2

13/23 5t = -20 t = -4

14/23 -j = j =

15/23 c = 17

16/23 -4b + 1 = -3 b = 1

18/23 -329 – x = -634 x = 305

19/23 y = 70

20/23 p = 48

21/23 5y + 9 + 2y = 23 y = 2

22/23 6(n + 5) = 66 n = 10

23/23: Literal Equation Given d = rt for t t = d/r Solve for r r = d/t

23.5/23: Literal Equation Given y = mx + b solve for b b = y – mx Solve for m m = (y – b)/x

23.75/23: Literal Equation Solve 12x + 3y = 9 for y y = -4x + 3

Exit Slip: On a half sheet of paper, write a specific question(s) on anything we have done in class so far:  Evaluating expressions  Combining like terms  Distributive property  Two-step equations If you don’t have any questions, please write “I do not have any questions, I understand everything we have done in class so far.”

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