Cool math fractal

math image

math image

Prealgebra Lessonsalgebra lessonsgeometry math artmath puzzlesCoolmath booksother math stuff
math help lessonsmath practice problemsmath gamesmath dictionarygeometry trigonometry reference area
math for teachersmath for parentsCool math 4 kids .comSpike's Game ZoneFinanceFreak.comTotallyStressedOut.com

Coolmath Algebra
Solving Inequalities Lesson 4 - Solving Basic Guys (page 1 of 3)
---- This algebra lesson explains how to solve basic (linear) 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
Let's jump in and try one!

2x - 5 is greater than or equal to 7

Hmm... Well, we know how to solve

2x - 5 = 7

Right?  Guess what?  We do it the same way!

(There's only one freaky thing you'll have to watch out for and it's in the next lesson)

Here we go:

2x - 5 is greater than or equal to 7, ditch the 5 by adding 5 to both sides which gives 2x is greater than or equal to 12, ditch the 2 by dividing both sides by 2 which gives x is greater than or equal to 6

OK, so what does this answer mean?

(It's super important in math to understand what your answers mean!)

We can graph it on a number line:

number line showing x is greater than or equal to 6

So, in our original problem,  2x - 5 is greater than or equal to 7  , x can be 6... or x can be a number bigger than 6.

Continued on the next page

 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  :::::::
 
 ||  about us  ||  safe surfing  ||  privacy policy  ||  terms of use  ||  copyrights & fair use  ||
||  math  ||  math for ages 13-100  ||  math for kids  ||  math for teachers  ||  math for parents  ||  math games  ||  algebra  ||
||  math help lessons  ||  math practice problems  ||  online math dictionary  ||  algebra books  ||  math anxiety  ||
||  science  ||  free online games and puzzles  ||  continuing teacher education  ||

Thanks for visiting Coolmath.com
© 1997-2009 Coolmath.com, Inc.