Equations and Inequalities

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What is an equation?

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What is an inequality?

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What does it mean for x = 5 to be a solution of an equation?

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It means that when you substitute 5 for x in the equation, both sides of the equation are equal.

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What is the difference between an equation and an expression?

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An equation contains an equal sign and states that two expressions are equal, while an expression does not have an equal sign and represents a value.

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What does it mean to isolate a variable in an equation?

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To isolate a variable means to manipulate the equation so that the variable is on one side by itself, making it easier to solve.

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What is a solution set?

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A solution set is the set of all values that satisfy a given equation or inequality.