Number
Number

Statistics and Probability
Statistics and Probability
Algebra
Geometry and Measures
Mock Exams

3.5 Inequalities


State the meaning of the following inequalities.
1.
x<10
x is less than 10.
2.
x>10
x is greater than 10.
3.
y4
y is less than or equal to 4.
4.
y90
y is greater than or equal to 90.
5.
3<a10
a is greater than 3 but less than or equal to 10.
6.
4a<1
a is greater than or equal to -4 but less than -1.
7.
60x10
x is less than or equal to 60 but greater than or equal to -10.

Inequality Symbols

It is very easy to get the symbol round the wrong way. So always check.

If the letter (say x ) is next to the bigger end of the symbol ( x> ) then x is greater than…

If the letter (say x ) is next to the little end of the symbol ( x< ) then x is less than…

The symbol with the double line (i.e. or ) is inclusive of the value (hence equal to).

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