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Coolmath Algebra
Solving Inequalities Lesson 1 - What Your Answers Will Look Like (Intervals) (page 2 of 4)
---- This algebra lesson explains intervals - what your answers will look like when you solve inequalities

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TRY IT:

Graph  x > -2  on a number line.

Graph  x is less than or equal to 5  on a number line.

What about something like this?

number line showing x is greater than or equal to 1 and less than or equal to 4

This means that x can be 1... or x can be 4 ... or x can be any number between 1 and 4 ... Like 2 or 3.01459.

One way to write this interval is

1 is less than or equal to x is less than or equal to 4

(read as "x is greater than or equal to 1 and less than or equal to 4")

So, how would we graph this on a number line?

-1 < x and less than or equal to 3


 

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