Inequalities

Definition

An inequality is a mathematical sentence that uses symbols such as <, ≤,>, or ≥ to compare two quantities.

Our aim is to have x (or whatever the variable is) on its own on the left of the inequality sign:

 

That inequality is “solved”.

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Example 1:

Example 2:

Note: Change sign when multiply/divide by negative sign!

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Exercise:

Solve the inequality

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References:

Maths is Fun. (2016). Inequalities. Retrieved from Maths is Fun: http://www.mathsisfun.com/algebra/inequality-solving.html

Retrieve from Miss Nadhirah, Lecturer of Cosmopolitan College Commerce & Technology.(2016), Inequalities.

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