SWBAT… solve multi-step equations

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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:

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Presentation transcript:

SWBAT… solve multi-step equations 2nd Period, Tues, 10/5/10 SWBAT… solve multi-step equations Agenda Warm-up (10 min) Review hw#3 (10 min) Work on hw#4 (20 min) Warm-Up. Solve and check each equation: 1.) b – 8b + 1 = -6 (Hint: Step 1: CLT  b – 8b) 2.) -(3 + x) = 21 HW#4-Multi-Step Eqns 1.) b = 1 2.) x = -24

SWBAT… solve multi-step equations 2nd Period Wed, 10/6/10 SWBAT… solve multi-step equations Agenda Review hw#3 (10 min) White board practice – equations (35 min) Warm-Up. Solve: 1. -6y + 12 + 3y = 21 HW#5 – Eqns with variables on both sides

HW#5 Answers: Step 2: Subtract 2 from both sides Step 1: Add 4c to both sides k = -4 g = 14 y = 3 m = 4 a = 1 j = 3 w = ½ x = 2

SWBAT… solve equations with no solutions or infinite solutions 1st Period Fri, 10/8/10 SWBAT… solve equations with no solutions or infinite solutions Agenda Review hw#6 (10 min) Equations: no solutions or infinite (20 min) Practice: HW#7 (15 min) Warm-Up. Solve: 5x + 5 = 3(5x – 4) – 10x -5(3 – q) + 4 = 5q – 11 HW#7 – Eqns with no solutions or infinite solutions

SWBAT… solve multi-step equations. 2nd Period Fri, 10/8/10 SWBAT… solve multi-step equations. Agenda Quiz (10 min) Quiz corrections / application equation problems (35 min) Warm-Up: Solve 2(r + 4) – 2 = (12r + 18) HW#6 – Application Equation Problems/ Quiz Corrections r = -1

Take out week 5 agenda Take out a red pen This is your quiz – you have 10 minutes! Make sure to CHECK your answers! Hint: You can leave #5 as a decimal (or fraction)

SWBAT… solve equations with no solutions or infinite solutions Tues, 10/12/10 SWBAT… solve equations with no solutions or infinite solutions Agenda WU: Equations: no solutions or infinite (10 min) Equations on poster board Warm-Up. Solve: 5(x + 3) + 2 = 5x + 17 8(5c – 2) = 10(32 + 4c) HW#7 – Eqns with no solutions or infinite solutions/ HW#8: Multi-step eqns Infinite Solutions or All Numbers -Since the expressions on each side of the equation are the same, this equation is an identity. It is true for all values of x. -Plug in any for x. The left side will equals the right side. Try it, it really works! 2. No solution Since -16 does not equal 320, this equation has no solution.

HW#7-No Solutions & Infinite Solutions Answers Infinite Solutions or All Numbers

HW#6-Application Equations Answers 24.9 = 8.1 + t t = 16.8 hours 555 = 139 + p p = 416 passengers 5 + c = 7.5 c = 2.5 million 1.6 – m = 0.8 m = $0.8 million 126 = 2/3c c = $189 2/3p – 25 = 115 p = $210 2h – 175 = 755 h = 465 home runs

HOMEWORK HW#8 – Multi-step equations (Just the front side) Tomorrow we will present the your posters

You will be working with the student sitting next to you On the big poster board, solve your equation given Show all work (but you already knew that!) Write out the steps as you solve the problem Select students will present their equation

SWBAT… solve literal equations Wed, 10/13/10 SWBAT… solve literal equations Agenda Equation presentations (15 min) Equations on tablets (30 min) Warm-Up. Solve: Take out hw#8 Take a tablet and eraser - do not write on them yet! (to be used after the presentations) HW#9 – Literal Eqns Infinite Solutions or All Numbers -Since the expressions on each side of the equation are the same, this equation is an identity. It is true for all values of x. -Plug in any for x. The left side will equals the right side. Try it, it really works! 2. No solution Since -16 does not equal 320, this equation has no solution.

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.

6/15 k = 12

5y – 4 = 9y + 8 y = -3 7/15 Step 1: Subtract 9y from both sides Step 2: Add 4 to both sides Step 3: Divide both sides by -4 y = -3

8/15 The sum of six and four times d is the same as d minus nine. Solve for d. 6 + 4d = d – 9 d = -5

9/15 3(2k – 2) = -2(4k – 11) k = 2

10/15

11/15 6(3a + 1) – 30 = 3(2a – 4) a = 1

12/15: Literal Equation Given d = rt for t Solve for r t = d/r r = d/t

Given y = mx + b solve for b 13/15: Literal Equation Given y = mx + b solve for b Solve for m b = y – mx

14/15: Literal Equation Given P = 2l + 2w solve for w w = (P – 2l)/2

15/15: Literal Equation Solve 5x – 3y = 9 for y y = 5/3x – 3