1. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
AIM: Solving Inequalites
involving Multiplication
and Division Do Now
Solve the following equations.
a.) -3(x - 4) = -24 b.) -1 x - 4 = -2
2 5
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2. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
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3. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
Anticipatory Set
Multiplying or Dividing an Inequality BY a Negative Number
Simplify each expression in your notes and fill in the blank with < or >.
6 ÷ 2 ______ 12 ÷ 2
6 ÷ 1 ______ 12 ÷ 1
6 ÷ (-1) _______ 12 ÷ (-1)
6 ÷ (-2) _______ 12 ÷ (-2)
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4. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
Anticipatory Set
Multiplying or Dividing an Inequality BY a Negative Number
Simplify each expression in your notes and fill in the blank with < or >.
6 2 ______ 12 2
6 1 ______ 12 1
6 (-1) _______ 12 (-1)
6 (-2) _______ 12 (-2)
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5. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
Anticipatory Set
Multiplying or Dividing an Inequality BY a Negative Number
CONCLUSION: Explain what you noticed
when you divided or multiplied an inequality
by a negative number.
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6. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
Brainpop
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7. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
A.) Solve the following inequality:
-4x > 48 CHECK
Graph the solution set.
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8. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
B.) Solve the following inequality:
3x < -21 CHECK
Graph the solution set.
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9. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
C.) Solve the following inequality:
x CHECK
-4 ≤ 6
Graph the solution set.
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10. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
D.) Solve the following inequality:
x CHECK
≥ -4
5
Graph the solution set.
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11. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
An elevator can carry up to 2,500 lb.
Suppose the weight of an average adult is
150 lb. At most how many average‐sized
adults can safely ride the elevator at the
same time? Write and solve an inequality.
Graph the solution set.
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12. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
• Mary pays $0.06 per kilowatt‐hour for
electricity. She has budgeted $72 for her
electricity. What is the greatest number of
kilowatt‐hours Mary can use and stay
within her budget? Write and solve an
inequality.
Graph the solution set.
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13. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
E.) Solve the following inequality:
x+4>2 CHECK
Graph the solution set.
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14. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
F.) Solve the following inequality:
-5x ≤ -30 CHECK
Graph the solution set.
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15. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
G.) Solve the following inequality:
x CHECK
-2 ≤
3
Graph the solution set.
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16. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
Before You Leave
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17. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
Mr. Tjersland's Math 7
Homework: On Core Page 72 #1-7 all
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18. Day 23 Solving One Step IneqMult Div.notebook February 01, 2013
AIM: Solving Inequalites
involving Multiplication
and Division
BIG IDEA
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19. Attachments
Class Notes 10­23­06.doc