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Objective The student will be able to:
solve inequalities using multiplication and division. SOL: A.1, A.3 Designed by Skip Tyler, Varina High School
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1) Which graph represents the correct answer to > 1
-4 -3 -5 o -4 -3 -5 ● -4 -3 -5 ● -4 -3 -5 Answer Now
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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
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2) When solving > -10 will the inequality switch?
Yes! No! I still don’t know! Answer Now
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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
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3) When solving will the inequality switch?
Yes! No! I still don’t know! Answer Now
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3) Solve x > -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 x > -24 o -24 -23 -25
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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?
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4) Solve -8p ≥ -96 p ≥ 12 p ≥ -12 p ≤ 12 p ≤ -12 Answer Now
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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
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● ● 5) Solve 7v < -105 o o -15 -14 -16 -15 -14 -16 -15 -14 -16 -15
Answer Now
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