Algebra 1 3-3 Complete Lesson: Solving Inequalities Using Multiplication or Division
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5 (1 rating)
by Matthew Richardson
| 21 Questions
Note from the author:
A complete formative lesson with embedded slideshow, mini lecture screencasts, checks for understanding, practice items, mixed review, and reflection. I create these assignments to supplement each lesson of Pearson's Common Core Edition Algebra 1, Algebra 2, and Geometry courses. See also mathquest.net and twitter.com/mathquestEDU.
The outlined content above was added from outside of Formative.
1
5 pts
Solve It! Drag the appropriate inequality sign to fill in each blank.
  • <
  • >
  • (4)(3) ___ (1)(3)
  • (4)(2) ___ (1)(2)
  • (4)(1) ___ (1)(1)
2
5 pts
Solve It! Drag the appropriate inequality sign to fill in each blank.
  • <
  • >
  • (4)(-1) ___ (1)(-1)
  • (4)(-2) ___ (1)(-2)
  • (4)(-3) ___ (1)(-3)
3
10 pts
Solve It! Consider the previous item. What happens to the inequality symbol when you multiply each side of an expression by a positive number? A negative number? Justify your reasoning.
4
10 pts
Problem 1 Got It? What are the solutions of the inequality?

c < 1
c > 2
4 < c
c > 1/32
5
10 pts
Problem 1 Got It? Graph the solutions of the inequality.
Include all relevant graph detail.
6
10 pts
Problem 2 Got It? What are the solutions of the inequality?

n > -36
n > -4
36 < n
n < -4
7
10 pts
Problem 2 Got It? Graph the solutions of the inequality.
Include all relevant graph detail.
8
10 pts
Problem 3 Got It? A student club plans to buy food for a soup kitchen. A case of vegetables costs $10.68. The club can spend at most $50 for this project. What are the possible numbers of cases the club can buy? Categorize the number of cases.
  • 1 case
  • 2 cases
  • 3 cases
  • 4 cases
  • 5 cases
  • 6 cases
  • 7 cases
  • The club can afford:
  • The club can not afford:
Functionalized Placeholder
9
9
10 pts
Problem 3 Got It? Reasoning: In Problem 3, why do you round to the greater whole number?
10
10 pts
Problem 4 Got It? What are the solutions of the inequality?

x < 2
x < 50
x > -2
x > 50
11
10 pts
Problem 4 Got It? Graph the solutions of the inequality.
Include all relevant graph detail.
Functionalized Placeholder
12
12
10 pts
Match each inequality with its graph.
  • x + 2 > -1
  • -x/3 < -1
  • x - 4 ≤ -1
  • -3x ≥ 9
  • Graph A
  • Graph B
  • Graph C
  • Graph D
13
10 pts
Which operation would you use to solve the inequality? Explain. Respond for each of the three inequalities.


14
10 pts
Error Analysis: Describe and correct the error in the solution.

15
10 pts
Review Lesson 2-3: Solve the equation.
Enter only a number.
16
10 pts
Review Lesson 2-3: Solve the equation.
Enter only a number.
17
10 pts
Review Lesson 2-3: Solve the equation.
Enter only a number.
18
10 pts
Vocabulary Review: Drag the inequalities into the Inequality category.
  • 5 + x < 6
  • 7 - y ≥ 2
  • a + b = 12
  • m - 3 > 5
  • 2 + 3 = 3 + 2
  • Inequality
19
10 pts
Vocabulary Review: Match each inequality on the left with its equivalent inequality on the right.












20
100 pts
Notes: Take a clear picture or screenshot of your Cornell notes for this lesson. Upload it to the canvas. Zoom and pan as needed.

For a refresher on the Cornell note-taking system, click here.
21
10 pts
Reflection: Math Success
Add to my formatives list

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