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Published byJulia Bradford Modified over 9 years ago
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Get ready before the bell rings! Take out homework and a pencil to prepare for the homework quiz! Check the file folder for your class to pick up graded work Located by the bookshelf, blue crate. Look behind the tab for your class period and take home anything with your name on it.
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LAUNCH: TURN TO PAGE 135 IN YOUR TEXTBOOK AND WORK WITH YOUR NEIGHBORS ON “FOR YOU TO EXPLORE” 2.09 Getting Started
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Methods for solving? What makes problems 4-8 so much harder than problems 1-3?
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LAUNCH: YOU CANNOT SOLVE 3T+12 = 5T + 6 BY USING BACKTRACKING. EXPLAIN WHY. 2.10 When Backtracking Doesn’t Work
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2.10 Equality on the Number Line 0
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Now solve the simplified equation using backtracking: 12 = 2t + 6 t is being multiplied by 2 and then you add 6. So to backtrack, we start with 12, subtract 6, then divide by 2. (12-6)/2 = 3, so t = 3
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2.10 Equality on the Number Line Check your work: w = 5
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2.10 Keeping it Equal
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Check your work: x = 4 Now turn to page 140 in your textbook and work with your neighbors to complete #1 -11 under “Check Your Understanding”
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2.11 The Basic Moves for Solving Equations Launch: Solve 7x – 8 = x + 16 Now turn to page 143-144 and read the “Minds in Action” dialog with a neighbor. One person is Tony and the other is Sasha. How does Sasha’s solution differ from yours? How is it the same?
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2.11 The Basic Moves in Solving Equations 3x – 5 = x + 7 -x 2x – 5 = 7 +5 +5 2x = 12 ÷2 x = 6
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2.11 The Basic Moves for Solving Equations
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Check your work: 4. s = 6 5. Sample: Add 5 and –s to each side, and then multiply each side by ½.
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2.11 Wrap Up Suppose that you teach a robot to do your algebra homework. Give the steps for solving the equation: 73x – 15 = 48x + 99
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Online Textbooks! Go to: https://www.successnetplus.com/https://www.successnetplus.com/ Your Username is firstname.lastname@rivervalley For example: rachel.krajewski@rivervalley Your Password is your student ID followed by your first initial and last initial (capitalized) For example: 19009999RK
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