7th Equations and inequalities review

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What is an inequality?

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An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, greater than or equal to, or less than or equal to the other.

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What does the symbol '>' mean in inequalities?

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The symbol '>' means 'greater than'. For example, x > 5 means x is greater than 5.

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What does the symbol '<' mean in inequalities?

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The symbol '<' means 'less than'. For example, x < 3 means x is less than 3.

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What does the symbol '≥' mean in inequalities?

Back

The symbol '≥' means 'greater than or equal to'. For example, x ≥ 4 means x is greater than or equal to 4.

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What does the symbol '≤' mean in inequalities?

Back

The symbol '≤' means 'less than or equal to'. For example, x ≤ 2 means x is less than or equal to 2.

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What does it mean if an equation has no solution?

Back

An equation has no solution if there is no value that can satisfy the equation. For example, the equation x + 2 = x has no solution.