1. Objective The student will be able to:
solve inequalities using multiplication and division.
Designed by Skip Tyler, Varina High School

2. 1) Which graph represents the correct answer to > 1-4 -3 -5 o -4 -3 -5 ● -4 -3 -5 ● -4 -3 -5
Answer Now

3. 1) Solve > 13 k < -52 o -52 -51 -53 Draw “the river”
Clear the fraction - Multiply both sides by -4
NEW STEP!! When multiplying BOTH sides by a NEGATIVE number, SWITCH the inequality!
Simplify
Check your answer
Graph the solution
k < -52 o
-52
-51
-53

4. 2) When solving > -10 will the inequality switch?
Yes!
No!
I still don’t know!
Answer Now

5. 2) Solve < -10 x < -30 o -30 -29 -31 Draw “the river”
Clear the fraction - Multiply both sides by 3. Do you switch the inequality?
No - Both sides are being multiplied by a positive number
Simplify
Check your answer
Graph the solution
x < -30 o
-30
-29
-31

6. 3) When solving will the inequality switch?
Yes!
No!
I still don’t know!
Answer Now

7. 3) Solve a > -24 o -24 -23 -25 Draw “the river”
Clear the fraction - Multiply both sides by -4. Do you switch the inequality?
Yes - Both sides are being multiplied by a negative number
Simplify
Check your answer
Graph the solution
a > -24 o
-24
-23
-25

8. Things that make you go.....Hmmm
Take a quick break!
Things that make you go.....Hmmm
Why is abbreviation such a long word?
Why do they have braille dots on the ATM machines in drive-thru’s?

9. 4) Solve -8p ≥ -96
p ≥ 12
p ≥ -12
p ≤ 12
p ≤ -12
Answer Now

10. 4) Solve -8p ≥ -96 p ≤ 12 -8(12) = -96 ● 12 13 11 Draw “the river”
Divide both sides by -8. Do you switch the inequality?
Yes - Both sides are being divided by a negative number
Simplify
Check your answer
Graph the solution
p ≤ 12
-8(12) = -96 ● 12 13 11

11. ● ● 5) Solve 7v < -105 o o -15 -14 -16 -15 -14 -16 -15 -14 -16 -15
Answer Now