math 8 alg thursday, october...
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8 Alg Day 33 Oct 27 Absolute Value.notebook
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Math 8 AlgThursday, October 27,
2016
Due today:Assgn.24.Compound Ineq. pp. 2068 16,18,20,22,24,26,30,36,38,47,50,51
Due tomorrow: Assgn #25. Absolute Value pp. 1501 1,2,7,11,17,18,21,24,30,34,42
Test on Monday through assgn 25
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Assgn.24.Compound Ineq. pp. 2068 16,18,20,22,24,26,30,36,38,47,50,51
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REMEMBER: With Absolute Value, when the "junk" inside the absolute value is positive, YOU LEAVE IT ALONE!
When the "junk" inside the absolute value is negative, take the opposite of it.
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One way to think of absolute value is to think of itas the distance a number is from zero. Since distancesare always positive, absolute value is always positive.
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If x is positive, then: If x is negative, then:
(The junk inside the absolute value could be positive... so you must leave it alone!)
(The junk inside the absolute value could be negative... so you must take the oppositeof it!)
Therefore the solutions are 4 and 4... now check them.
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x=12 or x=12x=12
so
3 3
or
So x = 15 or 1
Check:
YES! YES!
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Absolute value could never be negative....So no solution!
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What is your conclusion???
Only 2 works here!
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or
So x = 9 or 12
Check:
YUP TO BOTH!
Try this one...
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Try this one... check your solutions.
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How about this one?
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