Lesson Multi-Step Inequalities with Distributive Property
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1 Lesson: Lesson 6..6 Multi-Step Inequalities with Distributive Property 6..6 (Day ) - Supplement Multi-Step Inequalities with Distributive Property Teacher Lesson Plan CC Standards 7.EE.4b Use variables to represent quantities in a real-world or mathematical problem, and construct simple equations and inequalities to solve real-world or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities. b) Solve word problems leading to inequalities of the form px + q > r or px + q < r, where p, q, and r are specific rational numbers. Graph the solution set of the inequality and interpret it in the context of the problem. For example: As a salesperson, you are paid $0 per week plus $3 per sale. This week you want your pay to be at least $00. Write an inequality for the number of sales you need to make, and describe the solutions. Objective The student will solve multi-step inequalities by combining like terms and distributing. The student will graph solutions to multi-step inequalities. Mathematical Practices # Make sense of problems and persevere in solving them. # Use appropriate tools strategically. #6 Attend to precision. #7 Look for and make use of structure. Teacher Input Bellwork: Review bellwork. Homework: Review important problems assigned the previous night. Introduction: Introduce as directed on the PowerPoint. Lesson: Teach as directed by PowerPoint. Look at each slide for additional comments and answers. Make sure students follow along in their notes. Classwork Pages -6 Homework Page 7 Extra Practice This link will take you to a really good practice worksheet on this objective. The problems include -step equations and equations involving the distributive property. They are also provided a number line to graph the solution. Pages 8-9 below might be good for struggling students. Closure See last slide for closure, or close with an activity. P a g e
2 Steps for solving any Equation or Inequality ) Distribute if you can. ) Combine the like terms. 3) Solve the simplified equation by undoing in reverse. 4) Check your answer. Student Notes When solving an inequality, remember to reverse the symbol when multiplying or dividing both sides by a negative number. Look for the variable. If it is teamed up with a negative number then you will have to flip it! Guided Practice # You Try # + 9j + j 7 b 3b + 3 Guided Practice # You Try # 3z z 30 > 4 7n 8n 3 < 3 P a g e
3 Guided Practice #3 You Try #3 9(q + 3) < 4 (x + ) > Guided Practice #4 You Try #4 (x + 4) 0 3 (x + 3) 9 4 Guided Practice # You Try # x + (x + ) 3 6y + (y + 3) > 6 3 P a g e
4 Guided Practice #6 You Try #6 3x+4 3 x 3 < 6 x Guided Practice #7 You Try #7 3x (x 7) 8 x (x + 3) > 9 Guided Practice #8 You Try #8 3(x + ) (x 4) < 8 4(3 x) 3(4 x) > 4 P a g e
5 Name Date Period Classwork Solve.. 3(x + 4) >. 4(x ) < 8 3. (y + 7) < (x + ) > 8. 3(x 9) (y + 4) 6 7. (x + ) (y 3) + y > (x + ) 0x > (x ) + x 4 P a g e
6 . (y + 4) y > 8. (x + ) + 6(x ) (x + 4) (x + ) > 4. (y 4) + 8y + < 6. 8(x + ) 9x + x (3x 6) x + 6 > x < (x + ) > (x ) P a g e
7 Name Date Period Homework Solve and Graph n n 86. 3(x ) > 3. (y + 3) 4. (x + 0). x + 4(x ) < x ( x + 6) > 7 P a g e
8 Name Date Period Inequalities - Round Directions: Write the solution of each inequality. Extra Practice. x + > 8 3. x >. x + > 8 4. x > 3. x + 3 > 8. 3 x > 3 4. x + 4 > x > 4. x > 3 7. x + 4 > 8 6. x > 3 8. x + > 9 7. x 3 > 3 9. x + 6 > 0 8. x 4 > x < 9. 3x > 3. x 3 < 0. 3x > 8 3. x <. 3x > 33. x + > 7. 3x > x + > 8 3. x > 4 3. x + 3 > 9 4. x > 36. 3x + > 8. x > x + > 0 6. x < x + > 3 7. x < 39. (x + 3) > 4 8. x < (x + 3) < x > 4. 4(x + 3) > 8 x > 4. (x 3) < 0 x > (x 3) > 8 x > (x + 3) < 8 8 P a g e
9 Name Date Period Extra Practice Inequalities Round Directions: Write the solution of each inequality.. x + 6 < x <. x + < x < 3. x + 4 < x < 3 4. x + 3 < x < 4. x 3 < 7. 3x + 3 < 6 6. x 4 < 8. 3x + 4 < 7 7. x < 9. 3x + < 8 8. x 6 < 30. 3x > 9. 4x < x 4 > 0. 4x < x 7 >. 4x < 33. l 3x + < 7. 4x < x + < 7 3. x < x + 3 < 9 4. x < 36. 4x + <. x < x + < 7 6. x < x + < 3 7. x < (x + ) < 9 8. x < (x + ) < x < 4. (x + ) > x < 4. (x + ) < 4 x < (x ) < 9 x < (4x + ) < 9 P a g e
10 0 P a g e
11 Steps for solving any Equation or Inequality ) Distribute if you can. 6) Combine the like terms. 7) Solve the simplified equation by undoing in reverse. 8) Check your answer. Student Notes When solving an inequality, remember to reverse the symbol when multiplying or dividing both sides by a negative number. Look for the variable. If it is teamed up with a negative number then you will have to flip it! Guided Practice # You Try # + 9j + j 7 j 6 b 3b + 3 b -4 Guided Practice # You Try # 3z z 30 > 4 z < -7 7n 8n 3 < 3 n > -6 P a g e
12 Guided Practice #3 You Try #3 9(q + 3) < 4 q > -8 (x + ) > q < - Guided Practice #4 You Try #4 (x + 4) 0 x 6 3 (x + 3) 9 x 9 4 Guided Practice # You Try # x + (x + ) 3 x 3 6y + (y + 3) > 6 y> P a g e
13 Guided Practice #6 You Try #6 3x+4 3 x 3 < 6 x > 7 6 x x 4 Guided Practice #7 You Try #7 3x (x 7) 8 x x (x + 3) > 9 x > Guided Practice #8 You Try #8 3(x + ) (x 4) < 8 x < 8 4(3 x) 3(4 x) > x< 3 P a g e
14 Name Date Period Classwork Solve.. 3(x + 4) > x > 3. 4(x ) < 8 x < 3 3. (y + 7) < 70 x < (x + ) > 8 x < 4. 3(x 9) 30 x 9 6. (y + 4) 6 x 7. (x + ) 00 x 8 8. (y 3) + y > 6 y > 9. 4(x + ) 0x > 38 x < 0. 3(x ) + x 4 x 6 4 P a g e
15 . (y + 4) y > 8 y < 4. (x + ) + 6(x ) 0 x (x + 4) (x + ) > x > 4. (y 4) + 8y + < 6 y <. 8(x + ) 9x + x 4 x 6. 3 (3x 6) + x x + 6 > x > x < 6 x > (x + ) > 7 x < (x ) x 3 P a g e
16 Name Date Period Homework Solve and Graph n n 86 n. 3(x ) > x > 9 3. (y + 3) y 9 4. (x + 0) x. x + 4(x ) < 0 x > x ( x + 6) > x > 3 6 P a g e
17 Inequalities - Round [KEY] Directions: Write the solution of each inequality. Extra Practice. x + > 8 x > 7 3. x > x < 0. x + > 8 x > 6 4. x > x < 3. x + 3 > 8 x >. 3 x > 3 x < 4. x + 4 > 8 x > x > 4 x <. x > 3 x > 4 7. x + 4 > 8 x > 6. x > 3 x > 8. x + > 9 x > 7. x 3 > 3 x > 6 9. x + 6 > 0 x > 8. x 4 > 3 x > x < x < x > x > 3. x 3 < x < x > 8 x > 6 3. x < x <. 3x > x > x + > 7 x < 3. 3x > 4 x > x + > 8 x < 3. x > 4 x < 4 3. x + 3 > 9 x < 3 4. x > x < 36. 3x + > 8 x < 3. x > 6 x < x + > 0 x < 3 6. x < 4 x > x + > 3 x < 4 7. x < x > 39. (x + 3) > 4 x > 8. x < 6 x > (x + 3) < 6 x < x > x > 4. 4(x + 3) > 8 x > x > x > 4 4. (x 3) < 0 x > x > 3 x > (x 3) > 8 x < x > 4 x > (x + 3) < 8 x > 7 7 P a g e
18 Inequalities Round [KEY] Directions: Write the solution of each inequality. Extra Practice. x + 6 < 9 x < 3 3. x < x > 6. x + < 9 x < 4 4. x < x > x + 4 < 9 x <. 3 x < 3 x > x + 3 < 9 x < x < 4 x > 6 6. x 3 < x < x + 3 < 6 x < 6. x 4 < x < x + 4 < 7 x < 7. x < x < x + < 8 x < 8. x 6 < x < 30. 3x > x > 9. 4x < 0 x < 3. 3x 4 > x > x < 6 x < x 7 > x > 4. 4x < x < l 3x + < 7 x >. 4x < 8 x < 34. 3x + < 7 x > 3 3. x < 6 x > x + 3 < 9 x > 4. x < x > 36. 4x + < x > 3. x < 4 x > x + < 7 x > 6. x < 8 x > x + < 3 x > 7. x < 7 x > (x + ) < 9 x < 8. x < 6 x > (x + ) < x < x < x < 4. (x + ) > x > x < x < 0 4. (x + ) < 4 x > 3 x < 3 x < 43. 3(x ) < 9 x > x < 4 x < (4x + ) < x > 8 P a g e
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