Cool math fractal

math image

math image

pre-algebra help lessonsalgebra help lessonsprecalculus / calculus help lessonsmath anxiety survival guidegeometry math artmath and jigsaw puzzlesCoolmath booksother math stuff
math help lessonsmath practice problemsmath gamesmath dictionarygeometry trigonometry reference area
teacher's areaparent's areaCoolmath 4 kidsSpike's Game ZoneFinance FREAKTotally Stressed OutScience Monster
Coolmath Algebra
Solving Inequalities Lesson 5 - The Freaky Thing (page 4 of 4)
---- This algebra lesson explains the freaky thing that can happen when you are solving inequalities

math image
Now available: Coolmath Algebra books! Part 1, Part 2 and Part 3 covering the Algebra you need from Algebra 1 through Precalculus Algebra (Beginning Algebra through College Algebra)

other Coolmath Books: Coolmath Precalculus Review (the math you really need to survive Calculus 1) and Math Survival Guide (How to conquer math and deal with math anxiety)
line
Graphing Calculator Scientific Calculator << a new window will open for these
line

One other important thing -- and this one is common...

You only flip the sign when dividing by a negative number ... Not when you are dividing into a negative number!

When you do it:

 -5x < 10, ditch the -5 by dividing both sides by -5 AND flip the sign. Alert!

When you don't do it:

4x is greater than or equal to -8, ditch the 4 by dividing both sides by 4. That's ok

YOUR TURN:

-10x < 30

5 - 7x is greater than or equal to 33



 

 The printing and distribution and/or downloading of these lessons is strictly prohibited.
line
Graphing Calculator Scientific Calculator << a new window will open for these
line

.....:::::::::::::::  HELP SUPPORT COOLMATH  :::::::::::::::.....
:::::::  link to us   :::::::   advertise with us  :::::::  why we have ads  :::::::

Thanks for visiting Coolmath.com
© 1997-2010 Coolmath.com, Inc.