Inequalities

 

     means ‘a’ is less than ‘b’

     means ‘a’ is less than or equal to ‘b’

     means ‘a’ is greater than ‘b’

     means ‘a’ is greater than or equal to ‘b’

 

Plotting on number lines

 

1.       Draw the number line

2.      Use     as a start marker for  or  and use     as a start marker for  or  

3.       Use an arrow               or                to indicate direction

 

eg.                            

 

                 

 

Solving Inequalities

 

Use the same method as for solving equations but use the inequality sign throughout.

 

eg.       

 

 

 

If required, give the answer on a number line