Properties of Absolute Value (Theorems)

Covers the multiplicative and quotient properties of absolute value, the Triangle Inequality, and related theorems.

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Views #: 128
Questions #: 9
Time: 15 minutes
Pass Score: 80.0%
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Absolute Value of a Product

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According to the properties of absolute value, \(|a \cdot b|\) equals:

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Absolute Value of a Quotient

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For \(b \neq 0\), \(\left|\dfrac{a}{b}\right|\) equals:

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The Triangle Inequality

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The Triangle Inequality states that \(|x + y|\) is:

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When Does |a + b| = |a| + |b|?

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For which of the following pairs does \(|a + b| = |a| + |b|\)?

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Compute a Product of Absolute Values

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Compute \(|3| \cdot |-5|\).

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Compute the Square of an Absolute Value

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Given \(b = -4\), compute \(|b|^2\).

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The Reverse Triangle Inequality

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The theorem \(\big||a| - |b|\big|\) states that this quantity is:

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When Is the Triangle Inequality Strict?

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The general rule is that |a + b| is strictly less than |a| + |b| when:

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Complete the Statement About Square Roots

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Missing

For \(a \geq 0\), the symbol \(\sqrt{a}\) always denotes the ______ square root of a (never the negative one).

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Year 12