Unit 2 Review- Steps & Vocab (Equations & Inequalities)

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What is a constant in an expression?

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A constant is a fixed value that does not change. In the expression -5y + 4, the number 4 is a constant.

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What is a variable in an expression?

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A variable is a symbol used to represent an unknown value. In the expression -5y + 4, 'y' is a variable.

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What is a coefficient in an expression?

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A coefficient is a numerical factor that multiplies a variable. In the expression -5y + 4, -5 is the coefficient of y.

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What is the difference between an equation and an expression?

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An equation states that two expressions are equal, using an '=' sign. An expression does not have an '=' sign.

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What does it mean to solve an equation?

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To solve an equation means to find the value(s) of the variable(s) that make the equation true.

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What does it mean to solve an inequality?

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To solve an inequality means to find the value(s) of the variable(s) that make the inequality true.

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What happens to the inequality symbol when you multiply or divide by a negative number?

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The inequality symbol flips direction when you multiply or divide both sides by a negative number.

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