1. Do Now 11/16/09 Take out HW from Friday. Copy HW in your planner.
Practice worksheet 3.4
Punchline worksheet 24 “How Did the Turtle Call for Help When His Car Broke Down?”
Copy HW in your planner.
Text p. 151, #10-30 evens
Quiz sections 3.4 – 3.6 Wednesday
Chapter 3 Test Friday 11/20
Be ready to copy POTW #2

2. Homework Practice worksheet 3.4 evens

3. Homework Punchline worksheet 24
“How Did the Turtle Call for Help When His Car Broke Down?”
He Used His Shell Phone

4. Objective
SWBAT solve multi-step inequalities

5. Warm-up Solve Multi-Step Equations
Remember this?
Warm-up Solve Multi-Step Equations
In your notebook, complete the following three examples. Show all of your steps.

6. Section 3.6 “Solve Multi-Step Inequalities”
The steps for solving two-step and multi-step
equations can be applied to linear inequalities.
Solving Multi-Step Inequalities
STEP 1- Use distributive property and combine like terms.
STEP 2- Collect variables on one side of the equation.
STEP 3- “Undo” addition and/or subtraction.
STEP 4- “Undo” multiplication and/or division. (If multiplying or dividing by a negative, flip the inequality sign).
STEP 5- Solve for the variable.
STEP 6- Check your work.
STEP 7- Graph your solution

7. REMEMBER!!!!!
Multiplying and/or dividing each side of an inequality by a NEGATIVE number only produces an equivalent inequality IF the inequality sign is REVERSED!!

8. Solving Two-Step Inequalities…
Isolate the variable! Get ‘x’ by itself.
3x + 5 > -19
To get the ‘x’ by
itself first get rid
of “adding 5.” 5 5
Do the opposite.
“Subtract 5.”
Whatever you do to
one side of the inequality
you must do the other side.
3x > -24
To get the ‘x’ by
itself get rid
of “multiplying by 3.” 3 3
Do the opposite.
“Divide by 3.”
x > -8

9. 3x – 7 < 8. Graph your solution. Solve
Write original inequality.
3x < 15
Add 7 to each side.
x < 5
Divide each side by 3.
ANSWER
The solutions are all real numbers less than 5. Check by substituting a number less than 5 in the original inequality.

10. Solve – 6(x – 5) ≤ 150 –6(x – 5) ≤ 150 –6x + 30 ≤ 150 - 30 - 30
Write original inequality.
–6x ≤ 150
Distributive property
– 6x ≤ 120
Subtract 30 from each side. –
x >
–20
Divide each side by Reverse
inequality symbol. –
ANSWER
The solutions are all real numbers greater than equal Check by substituting a number more than -20 in the original inequality.

11. 6x – 7 > 2x+17. Graph your solution. Solve
Subtract 2x from each side.
-2x x
4x – 7 > 17
Add 7 to each side.
4x > 24
Divide each side by 4.
x > 6
ANSWER
The solutions are all real numbers greater than 6.

12. Practice

13. Homework
Text p. 151, #10-30 evens